Assertion: thorium | /r/AtLocation | trace levels
Facets:
value: in water
type: LOCATION
value: in soil
type: LOCATION
value: in animals
type: OTHER
value: in plants
type: LOCATION
value: in rocks
type: LOCATION
Source sentences:
text: Thorium (chemical symbol Th) is a naturally occurring radioactive metal found at trace levels in soil, rocks, water, plants and animals.