Assertion: thorium | /r/HasProperty | occurring radioactive metal
Facets:
value: naturally
type: MANNER
Source sentences:
text: Thorium (chemical symbol Th) is a naturally occurring radioactive metal found at trace levels in soil, rocks, water, plants and animals.
text: Thorium is a naturally occurring radioactive element which is found in the Earth mainly in oxides, silicates, carbonates and phosphates.
text: Thorium is a naturally occurring radioactive metal found in soil, rock, and water.
text: Thorium is a naturally occurring radioactive metal that is found in soil, rock, and water.