Ben Affleck wins $1 million on Who Wants to Be a Millionaire, but the larger payoff belongs to organizations working in eastern Congo. The actor and 31-game Jeopardy! champion Jamie Ding secured the top prize for the Eastern Congo Initiative after relying on host Jimmy Kimmel for help with a surprisingly difficult question about presidential turkeys.

The victory concluded a game that began during the ABC season premiere on July 22 and continued into the Wednesday, July 29, episode. Affleck had joked that he was “riding this guy’s coattails,” although Ding, for all his formidable trivia credentials, was equally uncertain when the final question arrived.

What was the $1 million question?

Affleck and Ding were asked: “In an annual Thanksgiving tradition, all but which of these have been the names of turkeys pardoned by a U.S. president?”