About: http://webisa.webdatacommons.org/43781385

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	I wasn't able to reproduce the hangs as reported but definitely saw a large slowdown of these test cases which is gone with this fix.
http://www.w3.org/ns/prov#wasQuotedFrom	java.com