Problem: Given the question: Build a movie plot around this: What year is the movie set? 1854
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The answer is:
At the West Point Military Academy in 1854, the cadet Carl Rader (an agent of John Brown) (Van Heflin), is dishonorably discharged for spreading anti-slavery pamphlets. His classmates Jeb Stuart (Flynn) and George Custer (Ronald Reagan) become second lieutenants and are posted to Fort Leavenworth, Kansas Territory, the most dangerous duty in the armyan assignment they relish. On the way to Kansas, Custer and Stuart meet Cyrus K. Holliday, in charge of building the railroad to Santa Fe, New Mexico, and his daughter Kit (de Havilland), with whom both officers fall in love.The Kansas Territory is bloodstained and war-torn, a victim of John Brown's relentless crusade against slavery. Meanwhile, Rader has enlisted as a mercenary in Brown's army, which has been terrorizing the countryside with bloody raids. During Brown's attack on a freight wagon under the protection of the U.S. Army, Stuart and Custer capture Brown's injured son Jason, and before dying, the troubled boy informs them about his father's hideout at Shubel Morgan's ranch in Palmyra. In disguise, Stuart rides into Palmyra, the center of the Underground Railroad, but Brown's men spot Stuart horse with an army brand and he is captured and taken him at gunpoint to Brown (Raymond Massey). While trying to escape, Stuart is trapped in a burning barn but is saved as Custer leads the cavalry to the rescue and drives Brown into seclusion.Three years go by to 1859. Believing that Brown's force has been broken, Stuart and Custer are sent back to Washington, D.C., where Stuart proposes to Kit. However, far from being defeated, Brown is planning to ignite war by raiding the arsenal at Harper's Ferry, Virginia. When Brown refuses to pay Rader for his services, Rader rides to Washington to alert Stuart of Brown's plans, and the troops arrive just in time to crush the rebellion. Brown is then tried for treason by the state of Virginia, and hanged. The movie ends with Stuart and Kit being married.

Problem: Given the question: Build a movie plot around this: What happens while Richard is watching the demonstration? shots are fired
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The answer is:
At a London music hall theatre, Richard Hannay (Robert Donat) is watching a demonstration of the superlative powers of recall of "Mr. Memory" (Wylie Watson) when shots are fired.[1] In the ensuing panic, Hannay finds himself holding a seemingly frightened Annabella Smith (Lucie Mannheim), who talks him into taking her back to his flat. There, she tells him that she is a spy, being chased by assassins, and that she has uncovered a plot to steal vital British military information, masterminded by a man with the top joint missing from one of his fingers. She mentions the "39 Steps", but does not explain its meaning.Later that night Smith, fatally stabbed, bursts into Hannay's bedroom and warns him to flee. He finds a map of the Scottish Highlands clutched in her hand, showing the area around Killin, with a house or farm named "Alt-na-Shellach" circled. He sneaks out of the watched flat disguised as a milkman and boards the Flying Scotsman express train to Scotland. He learns from a newspaper that he is the target of a nationwide manhunt for Smith's murderer. When he sees the police searching the train, he enters a compartment and kisses the sole occupant, Pamela (Madeleine Carroll), in a desperate attempt to escape detection. She frees herself from his unwanted embrace and alerts the policemen, who stop the train on the Forth Bridge. Hannay escapes, however.He walks toward Alt-na-Shellach, staying the night in the house of a poor crofter (John Laurie) and his much younger wife (Peggy Ashcroft). Early the next morning, she sees a police car approaching and warns Hannay. Hannay flees, wearing the crofter's coat. At a bridge, he finds a sign for Alt-na-Shellach. He arrives at the house of the seemingly respectable Professor Jordan (Godfrey Tearle) and is let in after saying he has been sent by Annabella Smith. The police arrive, but Jordan sends them away and listens to Hannay's story. Jordan then reveals that he is missing part of a finger; he shoots Hannay and leaves him for dead.Luckily, the bullet is stopped...

Problem: Given the question: Build a movie plot around this: Who plays the obese gang lord? David Alan Grier
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The answer is:
Suburban girl Megan (Shoshana Bush) gets into a series of misadventures when she moves to the inner-city and pursues dance. A nerdy street boy named Thomas (Damon Wayans, Jr.) is passionate about street dancing, but he is stuck working for a hungry obese gang lord (David Alan Grier) who only loves food. Megan later befriends Thomas' ghetto sister Charity (Essence Atkins) who has a baby but also poor parenting skills. Charity has her own issues dealing with her dimwitted "baby daddy" (Shawn Wayans) who also is a bad parent. Once Megan and Thomas spend more time together, they become dance partners and begin to fall in love and start dating.