About: http://webisa.webdatacommons.org/407348356

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 ring cap prevents rain and other undesirable materials from entering the hollow interior of the branch ring and upper support pipe.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com