Assertion: vitamin d | /r/HasProperty | needed
Facets:
value: for development
type: PURPOSE
value: to expose face
type: PURPOSE
value: to expose the hands
type: PURPOSE
Source sentences:
text: These nutrients are needed to keep bones, teeth and muscles healthy.
text: The more skin that is exposed, the more vitamin D is produced, although it is only necessary to expose the hands and face, for example, in order to receive an adequate amount of vitamin D.
text: Vitamin D is a necessary vitamin for the growth and development of bones.