Assertion: air pollution | /r/HasProperty | concern
Facets:
value: for some time
type: TEMPORAL
value: to members
type: TRANSITIVE-OBJECT
value: in british columbia
type: LOCATION
Source sentences:
text: Air pollution is a concern in British Columbia, Canada because of its effects on health and visibility.
text: Air Pollution in Mexico City has been a concerning issue to all citizens and members of the health departments for some time.