Assertion: butterfly's cocoon | /r/HasProperty | spun of silk
Facets:
value: by caterpillars
type: OTHER
value: by many moths
type: OTHER
Source sentences:
text: A cocoon is a casing spun of silk by many moths and caterpillars, and numerous other holometabolous insect larvae as a protective covering for the pupa.
text: A cocoon is a casing spun of silk by many moths and caterpillars, and numerous other holometabolous insect larvae as a protective covering for the pupa.