Question: What is the date of birth of Rattanbai Jinnah's husband?
Sentence (from "Rattanbai Jinnah"): Rattanbai was the daughter of Lady Dina Petit and Sir Dinshaw Petit 2nd Baronet Petit, who in turn, was the son of Dinshaw Maneckji Petit, a member of the Petit family and the founder of the first cotton mills in India.
Relevant evidence: No