Assertion: ammonia | /r/AtLocation | soil
Facets:
value: frequently
type: TEMPORAL
Source sentences:
text: Ammonia is present in soil, water and air, and it is an important source of nitrogen for plants.
text: Ammonia is also frequently present in soil as a result of urea dosing.
text: Entering the environment Ammonia occurs naturally in the environment, and is present in air, soil, water, plants and animals.