About: http://webisa.webdatacommons.org/55101645

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	These valves make it easy to visually determine whether gas is on or off.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com