Assertion: acid rain's cause | /r/HasProperty | factory
Facets:
value: from human sources
type: OTHER
value: in the toronto-hamilton area
type: LOCATION
Source sentences:
text: The principal cause of acid rain is sulfur and nitrogen compounds from human sources, such as electricity generation, animal agriculture, factories, and motor vehicles.
text: The principal cause of acid rain is sulfur and nitrogen compounds from human sources, such as electricity generation, animal agriculture, factories, and motor vehicles.
text: Also in that same region, the Southeastern section of Canada is affected and the main cause is factories in the Toronto-Hamilton area.