About: http://webisa.webdatacommons.org/257850440

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	in which m is the number of urethane groups of the urethane compound minus 1, the urethane compound is a molecule comprising two or more urethane groups, and n is the functionality of the backbone.
http://www.w3.org/ns/prov#wasQuotedFrom	google.de