About: http://webisa.webdatacommons.org/284880638

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	then you have to use varchars or other more or less friendly types as keys to identify the entries (rather than to refer to them by their index).
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com