About: http://webisa.webdatacommons.org/389971636

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	Valves may be arranged to control the flow of gas, liquid, or solids such as powders and can be selected from manufacturers skilled in the arts of valve manufacturing of any particular valve from any suitable materials.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk