About: http://webisa.webdatacommons.org/199136834

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	However this product gas often contains foreign matter, such as dirt, iron filings, and other solid particles which can contaminate the seals.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com