About: http://webisa.webdatacommons.org/224111729

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 pool/spa water treatment system of claim 13, wherein the valve is a check valve.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com