Assertion: arsenic | /r/AtLocation | the earth
Facets:
value: naturally
type: MANNER
value: ’s crust,
type: LOCATION
Source sentences:
text: Arsenic occurs naturally in the earth’s crust, and much of its dispersion in the environment stems from mining and commercial uses.
text: Arsenic is a chemical element that occurs naturally in the earth, and in its raw state it is not harmful.