About: http://webisa.webdatacommons.org/346896166

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	As I state in my comment and you quote in the W3C, h1 is a heading and not a title.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com