About: http://webisa.webdatacommons.org/289381220

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	However, a slit or microscopic hole discharging minute amounts of air can be formed in the air passage, for example, and other configurations can also be used.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com