About: http://webisa.webdatacommons.org/421814072

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	In some embodiments, a sealable member (e.g., a valve, plug or other structure) may be provided, allowing the port to be opened or closed.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au