Question: Marion Zimmer Bradley and Robin McKinley, are of which nationality?
Sentence (from "Marion Zimmer Bradley"): Marion Eleanor Zimmer Bradley (June 3, 1930 – September 25, 1999) was an American author of fantasy, historical fantasy, science fiction, and science fantasy novels, and is best known for the Arthurian fiction novel "The Mists of Avalon", and the Darkover series.
Relevant evidence: Yes