Assertion: nitrate | /r/AtLocation | soil
Facets:
value: naturally
type: MANNER
Source sentences:
text: Nitrate is a nitrogen compound that occurs naturally in soil, water, plants, and food.
text: Nitrate (NO 3 ) is the primary source of nitrogen (N) for plants, and occurs naturally in soil and water.
text: Nitrates are naturally occurring in soil and water.