Assertion: krypton's isotope | /r/HasProperty | created
Facets:
value: during nuclear reactions
type: TEMPORAL
Source sentences:
text: These isotopes are created during nuclear reactions.
text: These two events (supernova and solidification of gas cloud) were inferred to have happened during the early history of the Solar System, because the 129I isotope was likely generated shortly before the Solar System was formed, seeding the solar gas cloud with isotopes from a second source.