Question: The attack on what city in Libya by members of the Islamic group Ansar al-Sharia led to the formation of a committee with Trey Gowdy as it's chairman?
Sentence (from "Operation Dignity Battle (Benghazi)"): The Shura Council of Benghazi Revolutionaries led by Ansar al-Sharia (Libya) have been designated as a terrorist organization by the United Nations, Turkey, the UAE, the United Kingdom and the United States.
Relevant evidence: No