Assertion: caterpillar's cocoon | /r/MadeOf | silk
Facets:
Source sentences:
text: You can easily distinguish one from the other because the cocoon is made of silk while the chrysalis is not.
text: They pupate above ground in cocoons made of larval hairs and silk.
text: These cocoons are made of silk and consist of two layers, into which larval hairs are incorporated.