About: http://webisa.webdatacommons.org/212100731

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	These chambers may be closed, partially closed, open, partially open, sealed, or combinations thereof, including any temporary or transient conditions involving any of these states, and the like.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com