About: http://webisa.webdatacommons.org/100038374

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	I am not sure what you mean by graph support to the API. In my mind, a store is a graph, the only reason we have not called it a graph is because we do not want to scare people away with unknown concepts.
http://www.w3.org/ns/prov#wasQuotedFrom	w3.org