Task: Question Generation
Input (English): Renfield, a solicitor, makes a journey into Transylvania via stagecoach. He mentions his destination, Castle Dracula, to the locals who react with alarm. They tell him Count Dracula is a vampire and when he doesn't believe them, one insists he wear a cross. When he arrives at the Castle, the Count bids him welcome. After drinking drugged wine, Renfield drops the cross and is bitten.Aboard ship, a now-enslaved Renfield laughs maniacally below as Dracula picks off the crew one by one. When the ship reaches England, he is the only living person found.Dracula meets Dr. Seward and his family at the opera. Lucia is completely fascinated by him and that night becomes his victim. Professor Van Helsing is called in, and he recognizes the danger for what it is. He also realizes that Dr. Seward's patient Renfield is somehow tied up in events. But soon after meeting the Doctor's new neighbor, Dracula, he figures out who is a vampireâbased on the fact Dracula casts no reflection in the mirror. Not a moment too soon, because by now Seward's daughter Eva is falling under his spell. To her horror, she feels increasingly weak and also increasingly wildâat one point attacking her fiancÃ© Juan.With Seward's and Harker's help, Van Helsing seeks to trap Dracula but he outwits them and escapes with Eva by seizing control of a nurse's mind. They follow Renfield into Carfax Abbeyâan act which ends with Dracula killing his slave by strangulation then tossing him from a tall staircase. Deep in the catacombs under Carfax, they find Dracula asleep and Eva, still alive. Van Helsing drives a stake through the vampire's heart, and as Eva and Harker leave, Van Helsing prays over Renfield's body.
Output (English): Question: How did Van Helsing find out Dracula was a vampire?, Answer: Dracula cast no reflection in a mirror.