diff --git a/show/dance2009/subterms/song16.n3 b/show/dance2009/subterms/song16.n3
--- a/show/dance2009/subterms/song16.n3
+++ b/show/dance2009/subterms/song16.n3
@@ -1,70 +1,70 @@
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/edges> <http://light9.bigasterisk.com/expression> "blue(t)".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/edges> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/edges> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/edges>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/edges> <http://www.w3.org/2000/01/rdf-schema#label> "edges".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/srcross> <http://light9.bigasterisk.com/expression> "srcross(t)".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/srcross> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/srcross> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/srcross>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/srcross> <http://www.w3.org/2000/01/rdf-schema#label> "srcross".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/red> <http://light9.bigasterisk.com/expression> "red(t)".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/red> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/red> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/red>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/red> <http://www.w3.org/2000/01/rdf-schema#label> "red".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/edge> <http://light9.bigasterisk.com/expression> "blue(t)*.4*within(164,293)".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/edge> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/edge> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/edge>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/edge> <http://www.w3.org/2000/01/rdf-schema#label> "edge".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/bpurpleall> <http://light9.bigasterisk.com/expression> "bpurpleall(t)".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/bpurpleall> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/slcross> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/slcross>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/slcross> <http://www.w3.org/2000/01/rdf-schema#label> "slcross".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/slcross> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/slcross> <http://light9.bigasterisk.com/expression> "slcross(t)".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/blue> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/blue>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/blue> <http://www.w3.org/2000/01/rdf-schema#label> "blue".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/blue> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/blue> <http://light9.bigasterisk.com/expression> "blue(t)".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cyc> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/cyc>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cyc> <http://www.w3.org/2000/01/rdf-schema#label> "cyc".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cyc> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cyc> <http://light9.bigasterisk.com/expression> "beats1(t) * (smooth_music(t+0.1) > 0.5) + beats2(t)".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/> <http://www.w3.org/2000/01/rdf-schema#label> "".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/> <http://light9.bigasterisk.com/expression> "blue(t)".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/bow> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/bow>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/bow> <http://www.w3.org/2000/01/rdf-schema#label> "bow".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/bow> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/bow> <http://light9.bigasterisk.com/expression> "bow(t)".
 <http://light9.bigasterisk.com/show/dance2009/song16/subterm/bpurpleall> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/bpurpleall>.
 <http://light9.bigasterisk.com/show/dance2009/song16/subterm/bpurpleall> <http://www.w3.org/2000/01/rdf-schema#label> "bpurpleall".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/bow> <http://light9.bigasterisk.com/expression> "bow(t)".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/bow> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/bow> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/bow>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/bow> <http://www.w3.org/2000/01/rdf-schema#label> "bow".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/strobe> <http://light9.bigasterisk.com/expression> "strobe(t)>0".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/strobe> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/strobe> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/strobe>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/strobe> <http://www.w3.org/2000/01/rdf-schema#label> "strobe".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs2> <http://light9.bigasterisk.com/expression> "chase(t, names=back, ontime=0.2) * backchase(t)".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs2> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/bpurpleall> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/bpurpleall> <http://light9.bigasterisk.com/expression> "bpurpleall(t)".
 <http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs2> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/cs2>.
 <http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs2> <http://www.w3.org/2000/01/rdf-schema#label> "cs2".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/blue> <http://light9.bigasterisk.com/expression> "blue(t)".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/blue> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/blue> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/blue>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/blue> <http://www.w3.org/2000/01/rdf-schema#label> "blue".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/centercircle> <http://light9.bigasterisk.com/expression> "centercircle(t)".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/centercircle> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/centercircle> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/centercircle>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/centercircle> <http://www.w3.org/2000/01/rdf-schema#label> "centercircle".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs1> <http://light9.bigasterisk.com/expression> "chase1(t) * chase(t + 0.02, names=colors, ontime=0.3)".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs1> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/cs1>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs1> <http://www.w3.org/2000/01/rdf-schema#label> "cs1".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/green> <http://light9.bigasterisk.com/expression> "green(t)".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/green> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs2> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs2> <http://light9.bigasterisk.com/expression> "chase(t, names=back, ontime=0.2) * backchase(t)".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/edge> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/edge>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/edge> <http://www.w3.org/2000/01/rdf-schema#label> "edge".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/edge> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/edge> <http://light9.bigasterisk.com/expression> "blue(t)*.4*within(164,293)".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/srcross> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/srcross>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/srcross> <http://www.w3.org/2000/01/rdf-schema#label> "srcross".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/srcross> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/srcross> <http://light9.bigasterisk.com/expression> "srcross(t)".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/red> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/red>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/red> <http://www.w3.org/2000/01/rdf-schema#label> "red".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/red> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/red> <http://light9.bigasterisk.com/expression> "red(t)".
 <http://light9.bigasterisk.com/show/dance2009/song16/subterm/green> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/green>.
 <http://light9.bigasterisk.com/show/dance2009/song16/subterm/green> <http://www.w3.org/2000/01/rdf-schema#label> "green".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/slcross> <http://light9.bigasterisk.com/expression> "slcross(t)".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/slcross> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/slcross> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/slcross>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/slcross> <http://www.w3.org/2000/01/rdf-schema#label> "slcross".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cyc> <http://light9.bigasterisk.com/expression> "beats1(t) * (smooth_music(t+0.1) > 0.5) + beats2(t)".
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cyc> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cyc> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/cyc>.
-<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cyc> <http://www.w3.org/2000/01/rdf-schema#label> "cyc".
-<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/edges>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/green> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/green> <http://light9.bigasterisk.com/expression> "green(t)".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/strobe> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/strobe>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/strobe> <http://www.w3.org/2000/01/rdf-schema#label> "strobe".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/strobe> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/strobe> <http://light9.bigasterisk.com/expression> "strobe(t)>0".
+<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/slcross>.
+<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/blue>.
+<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/cyc>.
+<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/>.
+<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/bow>.
+<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/bpurpleall>.
+<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs2>.
+<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/edge>.
 <http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/srcross>.
 <http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/red>.
-<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/edge>.
-<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/bpurpleall>.
-<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/bow>.
+<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/green>.
 <http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/strobe>.
-<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs2>.
-<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/blue>.
+<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs1>.
 <http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/centercircle>.
-<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs1>.
-<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/cyc>.
-<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/slcross>.
-<http://light9.bigasterisk.com/show/dance2009/song16> <http://light9.bigasterisk.com/subterm> <http://light9.bigasterisk.com/show/dance2009/song16/subterm/green>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs1> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/cs1>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs1> <http://www.w3.org/2000/01/rdf-schema#label> "cs1".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/cs1> <http://light9.bigasterisk.com/expression> "chase1(t) * chase(t + 0.02, names=colors, ontime=0.3)".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/centercircle> <http://light9.bigasterisk.com/sub> <http://light9.bigasterisk.com/sub/centercircle>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/centercircle> <http://www.w3.org/2000/01/rdf-schema#label> "centercircle".
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/centercircle> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://light9.bigasterisk.com/Subterm>.
+<http://light9.bigasterisk.com/show/dance2009/song16/subterm/centercircle> <http://light9.bigasterisk.com/expression> "centercircle(t)".