About: http://webisa.webdatacommons.org/143840936

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	If cost is an issue, the Sigma is an easy choice, as you sacrifice very little in exchange for a significant cost reduction.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com