About: http://webisa.webdatacommons.org/190170629

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	zero, which means that all arithmetic except for addition and subtraction produces integer results.
http://www.w3.org/ns/prov#wasQuotedFrom	ss64.com