Question: Sako Shahinian and Arshile Gorky, are of which mutual nationality?
Sentence (from "Arshile Gorky"): Arshile Gorky ( ; born Vostanik Manoug Adoian, Armenian: Ոստանիկ Մանուկ Ատոյեան ; April 15, 1904 – July 21, 1948) was an Armenian-American painter, who had a seminal influence on Abstract Expressionism.
Relevant evidence: Yes