Question: With which German–American biophysicist who helped launch the molecular biology research program in the late 1930s did Salvador Luria win the Nobel Prize in Physiology or Medicine in 1969? 
Sentence (from "Salvador Luria"): Salvador Edward Luria (August 13, 1912 – February 6, 1991) was an Italian microbiologist, later a naturalized U.S. citizen.
Relevant evidence: No