Task: Question Generation
Input (English): The second presidential debate was held at Washington University in St. Louis, Missouri, on October 8, moderated by Charles Gibson of ABC. Conducted in a town meeting format, less formal than the first presidential debate, this debate saw Bush and Kerry taking questions on a variety of subjects from a local audience. Bush attempted to deflect criticism of what was described as his scowling demeanor during the first debate, joking at one point about one of Kerry's remarks, "That answer made me want to scowl."
Output (English): Who was the moderator of the second debate, held at the Washington University?