About: http://webisa.webdatacommons.org/48030362

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	Since you are using Eclipse, I think Thilo has it right The most likely reason you are getting this message is because one of your projects is compiling 1.6 classes.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com