About: http://webisa.webdatacommons.org/375104127

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	Rigid dome 12, fabricated of stainless steel, engineering plastic, or other suitable dimensionally stable material, is held on thornton ring 40 by creating a vacuum in between the two members or using a snap-on connector.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com