Assertion: uranium | /r/HasProperty | formed in super novae
Facets:
value: originally
type: TEMPORAL
Source sentences:
text: Uranium was apparently formed in super novae about 6.6 billion years ago.
text: Originally, uranium was formed by supernovas and its slow radioactive decay (Uranium-238, the most common uranium isotope, has a half-life of 4.5 billion years)
text: Uranium was apparently formed in supernovae about 6.6 billion years ago.
text: Uranium was apparently formed in super novae about 6.6 billion years ago.