Question: The 15:17 to Paris was based on an autobiography about a man who stopped a gunman on a Paris-bound train on what date?
Sentence (from "Alek Skarlatos"): Aleksander Reed "Alek" Skarlatos ( born October 10, 1992) is an American Oregon Army National Guardsman specialist who, along with fellow Americans Spencer Stone and Anthony Sadler, a Briton and two Frenchmen, stopped a gunman on a Paris-bound train travelling from Amsterdam via Brussels in August 2015.
Relevant evidence: Yes