Assertion: air pollution | /r/HasProperty | major issue
Facets:
value: to ill health in the uk
type: TRANSITIVE-OBJECT
value: in mexico city
type: LOCATION
value: for decades
type: TEMPORAL
Source sentences:
text: Air pollution has been a major issue in Mexico City for decades.
text: Air pollution is a major contributor to ill health in the UK, but it's hard to say exactly by how much.