About: http://webisa.webdatacommons.org/48278091

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	P, Q, R, and Z are also variables, but they stand for properties or qualities, such as having a heart or being essential for survival.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com