About: http://webisa.webdatacommons.org/371738335

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 prefer K1, V1, K2, V2, K3, V3 when emphasizing the relation between all types in a MapReduce job, or K, V when this distinction is not important.
http://www.w3.org/ns/prov#wasQuotedFrom	apache.org