Assertion: manta ray | /r/HasProperty | graceful swimmers
Facets:
value: in the ray family
type: OTHER
Source sentences:
text: Mantas are graceful swimmers.
text: Manta rays are graceful giants in the ray family that can weigh over 4,400 pounds (2,000 kilograms).
text: The manta ray is a solitary animal and is also a graceful swimmer.
text: They are graceful swimmers and can display interesting acrobatic tricks in the water.