Assertion: citrus fruit's vitamin c | /r/HasProperty | required
Facets:
value: for synthesizing collagen
type: PURPOSE
value: for maintaining healthy teeth
type: PURPOSE
Source sentences:
text: Vitamin C is required for maintaining healthy teeth.
text: Moreover, vitamin C is required for synthesizing collagen, that supports heavy metal absorption and is the predominant structural protein in the human body for healthy organs, blood vessels, tissue, and skin.