Assertion: air pollution | /r/HasProperty | derived
Facets:
value: mostly
type: DEGREE
value: from sources of domestic combustion
type: OTHER
Source sentences:
text: Air pollution in Taiwan is mostly derived from sources of domestic combustion, primarily the burning of fossil fuels.  
text: Most air pollution is man-made and derives from poor combustion of fossil or biomass fuels (e.g. exhaust fumes from cars, furnaces or wood stoves).
text: Air pollution can be divided in categories according to the source it is derived from: