About: http://webisa.webdatacommons.org/42973319

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	As for the vent, yes, it is sited at the top to exhaust gases, most notably the carbon dioxide from your breathing.
http://www.w3.org/ns/prov#wasQuotedFrom	wattsupwiththat.com