About: http://webisa.webdatacommons.org/99791920

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	A free oxygen-containing gas, such as air, is introduced through an injection pipe 9, as shown by the arrows 11.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com