Assertion: neptunium | /r/HasProperty | discovered by mcmillan
Facets:
value: at california
type: LOCATION
value: at berkeley
type: LOCATION
value: in 1940
type: TEMPORAL
Source sentences:
text: It was discovered by McMillan and Abelson in 1940 at Berkeley, California, USA, who bombarded uranium with neutrons produced from a cyclotron.