Assertion: thorium | /r/AtLocation | small amounts
Facets:
value: in soils
type: LOCATION
value: in most rocks
type: LOCATION
value: in sands
type: LOCATION
Source sentences:
text: Thorium is found in small amounts in most rocks and soils.
text: Thorium is found in small amounts in most rocks, soils and sands and it is three times more abundant than uranium.