Assertion: black swan | /r/CapableOf | duck its head
Facets:
value: to reach deep aquatic vegetation
type: PURPOSE
value: simply
type: MANNER
value: under the water
type: LOCATION
Source sentences:
text: The Black Swan has from 22 to 25 vertebrae in its elongated neck that allows it to simply duck its head under the water to reach deep aquatic vegetation.