Assertion: campfire's fuel | /r/HasProperty | a petroleum derivative
Facets:
value: usually
type: DEGREE
Source sentences:
text: Such devices usually use a liquid fuel (usually a petroleum derivative or some kind of alcohol), but gaseous fuels like propane, butane and solid fuels such as wood shavings and hexamine are also used depending on the stove design; while two-burner models are commonly used for front-country campstoves and function much like residential gas stoves, backpacking stoves generally put out a much more concentrated and less powerful flame and require lightweight cooking equipment ("billycans") made of aluminum or titanium rather than more typical kitchen-type utensils.