Assertion: plutonium | /r/CreatedBy | arthur c. wahl
Facets:
value: in 1940
type: TEMPORAL
value: at the university of california
type: LOCATION
Source sentences:
text: Plutonium was first made by Glenn T. Seaborg, Joseph W. Kennedy, Edward M. McMillan and Arthur C. Wahl at the University of California, Berkley in 1940.