About: http://webisa.webdatacommons.org/214910009

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	The seal between said cap and riser R is also air-tight whether the cap fits onto or is threaded into said riser.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com