About: http://webisa.webdatacommons.org/456676620

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	Under relational algebra, an expression is simply a relation such as a flat file or a set of records whose fields are primitive values such as integers, floating point numbers and text strings.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com