Question: Gemma Arterton played the lead role in what movie based on the 2009 novel "Their Finest Hour and a Half"?
Sentence (from "Their Finest"): The film stars Gemma Arterton, Sam Claflin, Bill Nighy, Jack Huston, Jake Lacy, Richard E. Grant, Henry Goodman, Rachael Stirling, Eddie Marsan, Helen McCrory, and Claudia Jessie.
Relevant evidence: No