Question: What is the date of death of Ai Weiwei's father?
Sentence (from "Ai Qing"): Aì Qīng (born Jiǎng Zhènghán  and styled Jiǎng Hǎichéng ; March 27, 1910 – May 5, 1996), is regarded by some as one of the finest modern Chinese poets.
Relevant evidence: Yes