About: http://webisa.webdatacommons.org/315260829

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	Methane is a product of retorting and helps indicate when a suitable hot zone has been established in the retort.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca