Assertion: californium | /r/CreatedBy | ghiorso
Facets:
value: at the university of california
type: LOCATION
value: in 1950
type: TEMPORAL
value: at berkeley
type: LOCATION
Source sentences:
text: Californium was produced by Ghiorso and others at the University of California, Berkeley, USA in 1950 who bombarded 242Cm with helium ions.