Question: Were Upton Sinclair and Daniil Kharms both writers?
Sentence (from "Daniil Kharms"): Daniil Kharms (Russian: Дании́л Ива́нович Хармс ; 30 December [O.S. 17 December] 1905  – 2 February 1942) was an early Soviet-era surrealist and absurdist poet, writer and dramatist.
Relevant evidence: Yes