About: http://webisa.webdatacommons.org/337879043

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	If you want to make oil from raw materials, you should clean them firstly, to remove the dust,stone and other impurity.
http://www.w3.org/ns/prov#wasQuotedFrom	biodiesel-machine.com