Assertion: plutonium | /r/HasProperty | discovered by edwin mcmillan
Facets:
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 Seaborg, Edwin McMillan, Joseph Kennedy, and Arthur Wahl in 1940.