--- a/src/layout/namespaces.ts	Fri Mar 18 12:00:33 2022 -0700
+++ b/src/layout/namespaces.ts	Fri Mar 18 23:41:24 2022 -0700
@@ -6,6 +6,8 @@
 export const EX = Util.prefix("http://example.com/");
 
 export const rdf = {
-    type: namedNode("http://www.w3.org/1999/02/22-rdf-syntax-ns#type"),
-  };
-  
\ No newline at end of file
+  type: namedNode("http://www.w3.org/1999/02/22-rdf-syntax-ns#type"),
+};
+export const rdfs = {
+  label: namedNode("http://www.w3.org/2000/01/rdf-schema#label"),
+};