Assertion: spiny dogfish's fin | /r/HasAspect | asymmetrical lobes
Facets:
Source sentences:
text: The caudal fin has asymmetrical lobes, forming a heterocercal tail.
text: The caudal fin has two asymmetrical lobes, the lower is smaller and rounder and the upper has a deep notch.
text: The caudal fin has asymmetrical lobes, forming a heterocercal tail.
text: The caudal fin has asymmetrical lobes, forming a heterocercal tail.