About: http://webisa.webdatacommons.org/109900657

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	V2.0 and V2.0 is an update based on V1.0), LETOR4.0 is a totally new release.
http://www.w3.org/ns/prov#wasQuotedFrom	microsoft.com