Question: What is the date of birth of Gong Deok-Gwi's husband?
Sentence (from "Gong Deok-gwi"): Gong Deok-gwi (April 21, 1911 – November 24, 1997 in Tongyeong, South Gyeongsang Province, Korea) was the wife of Yun Bo-seon, and thus was the second First Lady of South Korea from 1960 to 1962.
Relevant evidence: Yes