About: http://webisa.webdatacommons.org/239258259

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	And that the contents of the TextData cell contain nothing other than strings and BoxData cells (other valid TextData contents include StyleBoxes, ButtonBoxes, and TextData cells).
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com