About: http://webisa.webdatacommons.org/393703217

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	Advantageously, the ball valve comprises a rest for the ball, which rest supports the ball in such a manner as to block gas flow.
http://www.w3.org/ns/prov#wasQuotedFrom	worldwidescience.org