Assertion: cephalopod's fin | /r/HasProperty | part of the mantle
Facets:
Source sentences:
text: The mantle is all that is visible behind the head: the outer body wall and the fins are all part of the mantle. ).
text: A squid has two fins, a mantle, a head, eight arms and two tentacles, which are equipped with hooks and suckers or sucker rings.
text: The mantle is all that is visible behind the head: the outer body wall and the fins are all part of the mantle.