Assertion: crow's tool | /r/HasProperty | held
Facets:
Source sentences:
text: The creation of such leaf tools allows these crows to exploit naturally occurring hooks – the barbs running along the edges of these leaves can be used as hooks if the tool is held such that the barbs point towards the crows’ head.
text: "A tool is an object that can be held, turned, pressured, or otherwise manipulated to perform work that solves a problem or performs a service.