About: http://webisa.webdatacommons.org/71892166

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	A vacuum of 27 to 28 in. of Hg maintained for 2 to 3 minutes or other methods are useful to remove entrained air and dissolved gases from the slurry.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com