About: http://webisa.webdatacommons.org/396850339

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	The answer is a little misleading, since seems that data attribute is related to jQuery, while it has been introduced for HTML5 documents.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com