Assertion: pelican's parent | /r/CapableOf | leave the nest
Facets:
value: temporarily
type: MANNER
value: for periods of 30 minutes
type: TEMPORAL
value: at a time
type: TEMPORAL
Source sentences:
text: The parents leave the nest for periods of 30 minutes at a time to hunt for food for themselves and the chicks.
text: Colonies are regularly disturbed by human activity, and, like all pelicans, the parents may temporarily leave their nest if threatened, which then exposes the chicks to the risk of predation.