Assertion: cantaloupe's vitamin a | /r/HasProperty | essential
Facets:
value: to prevent vision problems
type: PURPOSE
Source sentences:
text: Vitamin A is essential to prevent vision problems, and vitamin C has a number of immune-boosting functions.
text: In the body, these carotenoids transform in vitamin A, an essential nutrient known for maintaining the health of the mucous membranes and the skin as well as for supporting the function of the immune system.