Assertion: occurring uranium | /r/MadeOf | two isotopes
Facets:
value: naturally
type: MANNER
value: primarily
type: DEGREE
Source sentences:
text: Naturally occurring uranium consists primarily of two isotopes U-238 and U-235, with 99.28% of the metal being U-238 while 0.71% is U-235, and the remaining 0.01% is mostly U-234.
text: Naturally occurring uranium consists of three isotopes: uranium-234, uranium-235 and uranium-238.