About: http://webisa.webdatacommons.org/97477639

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	do not know if they got an API but use some sort of script to query it.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com