Assertion: berkelium | /r/CreatedBy | kenneth street
Facets:
Source sentences:
text: Berkelium was first produced by Stanley G. Thompson, Glenn T. Seaborg, Kenneth Street, Jr. and Albert Ghiorso working at the University of California, Berkeley, in December, 1949.
text: Berkelium was produced by Stanley Thompson, Glenn Seaborg, Kenneth Street and Albert Ghirorso working at UC Berkeley.