Assertion: true yam | /r/HasProperty | dioscorea sp
Facets:
Source sentences:
text: Orange-fleshed sweet potatoes are often known as yams, especially in the southern United States, but they are quite different from true yams (Dioscorea sp.) in growth habit and use.
text: Moist, sweet flesh types of sweetpotatoes are sometimes called "yams", but these should not be confused with true yams (Dioscorea sp.).