Assertion: astatine | /r/HasProperty | discovered in university of california
Facets:
value: by dale r. corson
type: OTHER
value: by k. r. mackenzie
type: OTHER
value: by emilio segre in 1940
type: TEMPORAL
Source sentences:
text: Astatine was discovered in University of California, Berkeley, USA by Dale R. Corson, K. R. MacKenzie, and Emilio Segre in 1940.
text: The numbers in the three branches of the radioactive symbol equal 1940, the year astatine was discovered at the University of California — represented by the Cal in the bottom left corner.