About: http://webisa.webdatacommons.org/133912466

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	(You mentioned search, look into e.g. lucene or something similar, if you need full-text search.)
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com