About: http://webisa.webdatacommons.org/424641836

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	Because air tends to quench photopolymerization, the foaming gas is preferably inert, such as nitrogen or carbon dioxide.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk