Assertion: gull's parent | /r/CapableOf | exchange on the nest
Facets:
value: in the morning
type: TEMPORAL
value: in some pairs
type: LOCATION
value: in the evening
type: TEMPORAL
Source sentences:
text: In some pairs, parents exchange on the nest in the morning and in the evening so that their incubation rhythm follows a 24-hour day, in others each sex may sit on the nest continuously for up to 24 hours before it is exchanged by its partner.