Question: What do System of a Down and Richard Donchian have in common? 
Related documents: [0]  [DOC] System of a Down, sometimes shortened to System and abbreviated as SOAD, is an Armenian-American heavy metal band from Glendale, California, formed in 1994. The band currently consists of Serj Tankian (lead vocals, keyboards), Daron Malakian (vocals, guitar), Shavo Odadjian (bass, backing vocals) and John Dolmayan (drums). [END] 
[1]  [DOC] Richard Davoud Donchian (born September 1905, Hartford, Connecticut – d. 1993) was an Armenian-American commodities and futures trader, and pioneer in the field of managed futures. [END] 
Answer: 
Armenian-American
Armenian-American