About: http://webisa.webdatacommons.org/301304629

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	Problematic means doubtful, and no proposition is doubtful except in relation to the knowledge of some particular knower.
http://www.w3.org/ns/prov#wasQuotedFrom	marxists.org