Assertion: corkscrew's worm | /r/HasProperty | difficult to fold
Facets:
value: on the model
type: OTHER
Source sentences:
text: On the model I used, the knife and worm were both stiff and difficult to fold out from the body, while the single-hinged fulcrum required leaving about a spiral and a half of the worm out of the cork to get the leverage needed to extract it.