Question: Karl Paley Cohen workd within a group that included an American physicist who won the Nobel Price in Physics for his discovery of what?
Sentence (from "Karl P. Cohen"): He began his career in 1937 making scientific advances in uranium enrichment (isotope separation) as research assistant to Harold Urey, whose discovery of deuterium–the heavy isotope of hydrogen– earned him the 1934 Nobel Prize.
Relevant evidence: No