Assertion: uranium | /r/HasAspect | the isotope
Facets:
value: in nature
type: LOCATION
Source sentences:
text: It has numerous isotopes, including uranium 235 and uranium 238, the isotope which forms the largest fraction of depleted uranium.
text: Uranium has at least three isotopes in nature, and U235 is particularly useful as a fuel for nuclear reactors and as the basis for nuclear weapons.