Conversation so far:
What did Osama bin Laden do in his early life?
Osama bin Mohammed bin Awad bin Laden was born in Riyadh, Saudi Arabia, a son of Yemeni Mohammed bin Awad bin Laden, a millionaire construction magnate with Saudi royalty ties.
Is Osama bin Laden married?
At age 17 in 1974, Osama bin Laden married Najwa Ghanem at Latakia, Syria
Is Najwa Ghanem still alive?
Najwa bin Laden née Ghanem (born c. 1958) is a Syrian woman who was the first wife and first cousin of Osama bin Laden; she is still alive
What did Osama bin Laden do after he got married to Najwa Ghanem?
At age 17 in 1974, bin Laden married Najwa Ghanem at Latakia, Syria; they were separated before September 11, 2001.

Question: How many wives did he have?
Self-contained rewrite: How many wives did Osama bin Laden have?