Assertion: thorium | /r/AtLocation | bone
Facets:
value: for a long time
type: TEMPORAL
Source sentences:
text: Individuals exposed to thorium also have an increased risk of bone cancer because thorium may be stored in bone.
text: Since thorium is radioactive and may be stored in bone for a long time, bone cancer is also a potential concern for people exposed to thorium.
text: Thorium is radioactive and can be stored in bones.