Assertion: oyster | /r/HasProperty | important
Facets:
value: in all coastal areas
type: LOCATION
value: on an economical level
type: OTHER
value: on an ecological
type: OTHER
Source sentences:
text: They are important on both an ecological and an economical level.
text: Oysters were an important food source in all coastal areas where they could be found, and oyster fisheries were an important industry where they were plentiful.