About: http://webisa.webdatacommons.org/174790625

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	Variables, including numbers, initialize to null if no value is provided.
http://www.w3.org/ns/prov#wasQuotedFrom	dartlang.org