Assertion: polio's cure | /r/HasProperty | developed in 1950
Facets:
value: by medical researcher jonas salk
type: OTHER
Source sentences:
text: An American Story is a book by David M. Oshinsky, professor of history at the University of Texas at Austin, which documents the polio epidemic in the United States during the 1940s and 1950s and the race to find a cure, which was eventually developed in the 1950s by medical researcher Jonas Salk.