Assertion: hummingbird | /r/CapableOf | feed on the nectar of plants
Facets:
value: regularly
type: DEGREE
value: over thousands of years
type: TEMPORAL
value: for the energy
type: PURPOSE
Source sentences:
text: Over thousands of years hummingbirds fed regularly on the nectar of plants for the energy they needed to survive.
text: They feed on the nectar of these plants and are important pollinators, especially of deep-throated flowers.