Assertion: oak's acorn | /r/CapableOf | serve important role
Facets:
value: in early human history
type: TEMPORAL
value: especially
type: MANNER
value: for californian native americans
type: TRANSITIVE-OBJECT
Source sentences:
text: Acorns were a traditional food of many indigenous peoples of North America, and served an especially important role for Californian Native Americans, where the ranges of several species of oaks overlap, increasing the reliability of the resource.
text: Acorns served an important role in early human history and were a source of food for many cultures around the world.