About: http://webisa.webdatacommons.org/340094184

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	To prevent metallic surfaces from being attacked by the halogen, the enclosure 10 must first be flushed out with a dry gas, such as nitrogen or any other, which will not react with the halogen.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com