About: http://webisa.webdatacommons.org/221304123

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	Polyurethane foams are usually derived from polyethers such as polypropylene glycol and a diisocyanate in the presence of water or a blowing agent such as trifluoromethane.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com