Question: Are Edna St. Vincent Millay and Robert Penn Warren both Pulitzer Prize-winners for their poetry?
Related documents: [0]  [DOC] Edna St. Vincent Millay (February 22, 1892 – October 19, 1950) was an American poet and playwright. She received the Pulitzer Prize for Poetry in 1923, the third woman to win the award for poetry, and was also known for her feminist activism. She used the pseudonym Nancy Boyd for her prose work. The poet Richard Wilbur asserted, "She wrote some of the best sonnets of the century." [END] 
[1]  [DOC] Robert Penn Warren (April 24, 1905 – September 15, 1989) was an American poet, novelist, and literary critic and was one of the founders of New Criticism. He was also a charter member of the Fellowship of Southern Writers. He founded the literary journal "The Southern Review" with Cleanth Brooks in 1935. He received the 1947 Pulitzer Prize for the Novel for his novel "All the King's Men" (1946) and the Pulitzer Prize for Poetry in 1958 and 1979. He is the only person to have won Pulitzer Prizes for both fiction and poetry. [END] 
Answer: 
yes
yes