Please answer this: Please answer the following question about this movie plot. If it's un-answerable, please output "No answer". Question: What demonstration is Richard watching? Movie plot title: The 39 Steps Movie plot: 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...
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Answer: the superlative powers of recall of "Mr. Memory"
Problem: Please answer the following question about this movie plot. If it's un-answerable, please output "No answer". Question: How many children do Wayne and his wife Eileen have? Movie plot title: The Clearing Movie plot: Wayne Hayes (Robert Redford), and his wife Eileen (Helen Mirren) are living the American dream, having raised two children and built up a successful business from scratch. He is looking forward to a peaceful retirement with Eileen. However, everything changes when Wayne is kidnapped in broad daylight by a former employee, Arnold Mack (Willem Dafoe). While Wayne tries negotiating with the kidnapper for his life, and Eileen tries to secure her husband's release, she finds herself being investigated by the FBI.The kidnapping causes Wayne and Eileen to reevaluate their relationship, after Eileen discovers that Wayne has continued an extramarital affair that he promised to end months previously. Eileen begins to wonder whether she should pay the ransom, as it increasingly appears unlikely that Wayne will be safely released.However, Eileen's efforts to secure Wayne's release turn out to have been in vain, as Wayne was murdered by Arnold early in the kidnapping. Eileen's ordeal takes place over the course of a week, while Wayne is only held for a day before he is killed. The time discrepancy is only revealed towards the end of the movie, and until then it seems that Wayne and Eileen's experiences are occurring simultaneously.

A: Two children
Q: Please answer the following question about this movie plot. If it's un-answerable, please output "No answer". Question: Who wants revenge on him? Movie plot title: House Movie plot: Author Roger Cobb is a troubled man, having been separated from his wife (Kay Lenz), their only son Jimmy disappeared without a trace, and his aunt has committed suicide by hanging. On top of everything else, he has been pressured by his publisher to write another book. To the chagrin of his fans and publisher, Cobb plans a novel based on his experiences in Vietnam instead of another horror story as a way to purge himself of the horrors that he had experienced while there. After his aunt's funeral, Cobb decides to live inside her house to write, instead of selling it as recommended by the estate attorney. After moving in, Cobb begins to have powerful graphic nightmares, including thoughts about his military ally Big Ben, who died in Vietnam. In addition, strange phenomena spring forth from the house, haunting him in his waking hours as well. He tries communicating his fears to his next door neighbor named Harold, but he thinks that Cobb is crazy. One night while investigating a noise coming from his late aunt's bedroom, Cobb is attacked by a deformed monster inside the closet. Soon, more attacks occur: levitating garden tools attack him, his wife appears and transforms into a hideous hag-like creature to attack him, and gremlin creatures attempt to kidnap a neighbor's child that Cobb is reluctantly babysitting. Eventually, Cobb discovers an entry into a sinister other-world through the bathroom medicine cabinet and is pulled into the darkness, where he fortuitously locates his lost son Jimmy. Cobb manages to escape with Jimmy, but are soon confronted by an undead Big Ben who wants revenge on him; Cobb did not help him during Vietnam and instead was taken prisoner and tortured before dying. He confronts Ben, no longer afraid of his fears anymore, and destroys him with his own explosives as he and his son escape the burning house. In the end, he triumphantly glances back at the house while regaining control of his life and reunites with his wife and child.
A:
Big Ben