Assertion: oyster | /r/HasProperty | valuable food
Facets:
value: for human health
type: PURPOSE
Source sentences:
text: Shellfish and particularly oysters are valuable food for human health and contain about 80% of water, 17.2% of protein, and many vitamins such as A, D, E, B1, B2, B6, B12, C etc., and minerals that satisfy human nutritional needs .