Assertion: dolphin | /r/CapableOf | move its head
Facets:
value: in order to observe their environment
type: PURPOSE
value: freely
type: MANNER
Source sentences:
text: A medical probe moves back and forth very rapidly, much faster than a dolphin can move its head.
text: They also have an un-fused neck which allow these dolphins to freely move their heads around in order to better observe their environment and navigate the rivers.