About: http://webisa.webdatacommons.org/305861030

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 expansile number may optionally be coated with materials such as silicones, polytetra-fluoroethylene (PTFE), hydrophilic materials like hydrated hydrogels and other lubricious materials to aid in separation of the polymer coating.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es