About: http://webisa.webdatacommons.org/252022163

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 dilatation balloon may be formed from a polymeric material such as polyethylene terephthalate and may be formed in a process as described in U.S. Pat. No. 4,490,421 to Levy.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com