Assertion: butterfly | /r/NotCapableOf | fly
Facets:
Source sentences:
text: If they get too cold, they are unable to fly and must warm up their muscles in order to resume flight.
text: With an antenna lacking, butterflies may be unable to fly in a particular direction and may end up flying in a circular pattern.
text: The wings dry wrinkled and folded, and the butterfly is unable to fly.