Assertion: yam's skin | /r/HasProperty | difficult to peel
Facets:
Source sentences:
text: The edible tuber has a rough skin that is difficult to peel but readily softened by heating.
text: They are cylindrical in shape with brown, rough, bark-like skin that is difficult to peel, but it softens after heating.
text: Yam tubers tend to have rough skin that varies in color from light pink to dark brown and is difficult to peel but softens when heated.
text: The edible tuber has a rough skin that is difficult to peel but readily softened by heating.