Assertion: spider's silk | /r/CapableOf | form smooth walls
Facets:
value: for burrows
type: PURPOSE
Source sentences:
text: Silk can be used to aid in climbing, form smooth walls for burrows, build egg sacs, wrap prey and temporarily hold sperm, among other applications.
text: Silk can be used to aid in climbing, form smooth walls for burrows, build egg sacs, wrap prey and temporarily hold sperm, among other applications.