Assertion: manta ray | /r/CapableOf | tighten its cephalic fins
Facets:
value: to form swims
type: PURPOSE
value: around its mouth
type: LOCATION
value: to form a funnel
type: PURPOSE
Source sentences:
text: Then the manta ray tightens its cephalic fins around its mouth to form a funnel and swims, open-mouthed, in a straight line through the mass.