Assertion: water chestnut | /r/HasProperty | good example
Facets:
Source sentences:
text: Water chestnuts are a good example.
text: Water chestnuts are a good source of copper (an important antioxidant mineral), but low-carb folks can focus on other copper-rich foods like beef liver, shellfish, and mushrooms.
text: Water Chestnuts Are a Good Source of Fiber