Assertion: vitamin d | /r/HasProperty | available in two forms
Facets:
value: in supplements
type: MANNER
value: in fortified foods
type: OTHER
Source sentences:
text: In supplements and fortified foods, vitamin D is available in two forms, D 2 (ergocalciferol) and D 3 (cholecalciferol) that differ chemically only in their side-chain structure.