Assertion: butane | /r/HasProperty | extracted
Facets:
value: from petroleum
type: OTHER
value: from natural gas
type: OTHER
value: completely
type: DEGREE
Source sentences:
text: No, if the butane hasn’t been completely and properly extracted you may end up poisoned if you eat it.
text: Butane is refined in a four step process once it has been extracted from natural gas or petroleum.