About: http://webisa.webdatacommons.org/103270975

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	High-pressure gas (usually air or steam, although other gases such as nitrogen, argon, carbon dioxide, etc. can be used) is introduced into a chamber through nozzles that form grinding streams of sonic or supersonic velocity.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com