Conversation so far:
How long was Asif Ali Zardari president?
Asif Ali Zardari served as the 11th President of Pakistan from 2008 to 2013.
How long was Asif Ali Zardari in prison?
Asif Ali Zardari was in prison from 1996-2004.

Question: What did his wife do for a living?
Self-contained rewrite: What did Asif Ali Zardari's wife do for a living?