Assertion: giant squid's beak | /r/MadeOf | chitin
Facets:
value: mainly
type: DEGREE
Source sentences:
text: * only a Giant Squid’s beak is made of chitin, which is what the exoskeleton of many insects is made of.
text: The mouth is equipped with a sharp, horny beak mainly made of chitin and cross-linked proteins, which is used to kill and tear prey into manageable pieces.