Assertion: plutonium | /r/HasProperty | discovered by joseph w. kennedy
Facets:
value: in 1940
type: TEMPORAL
Source sentences:
text: Plutonium was discovered by Glenn T. Seaborg, Arthur Wahl, Joseph W. Kennedy & Edwin McMillan in 1940.
text: Plutonium was discovered by Glenn T. Seaborg, Edwin M. McMillan, Joseph W. Kennedy and Arthur C. Wahl at the Berkeley Laboratory of the University of California (United States) after the bombardment of uranium with deuterons, in 1940.