Question: After graduatng college,  André Dreiding spent two years as a research assisant for a healthcare company headquartered in what city?
Sentence (from "André Dreiding"): After two years as research assistant at Hoffmann-La Roche, he continued postgraduate studies at University of Michigan in Ann Arbor under professor Werner Emmanuel Bachmann, and was awarded his Ph.D. in 1947.
Relevant evidence: Yes