Assertion: acorn squash's skin | /r/HasProperty | hard to pierce
Facets:
Source sentences:
text: If you are planning to keep the squashes for a while, the fruit is ripe and ready to be picked when the skin is too hard to pierce with your fingernails.
text: As with other winter squash, the fruit should be allowed to mature on the vine, and it is considered ripe when the skin has a matte appearance and is too hard to be easily pierced with a fingernail.