Given a paragraph about movies, and a set of conversational question answers about the paragraph, generate a relevant question to the topic of the paragraph. The paragraph has the prefix 'CONTEXT:'. Each conversation question has a prefix `Q:` followed by the answer prefix `A:`.
One example: CONTEXT: The balance of power had shifted considerably since the first set of quotes. King Joffrey is dead, and his younger brother Tommen is now king. Unlike his wild card of an elder brother, Tommen is gentler and more prone to manipulation by his new bride. The Lannisters impeccable image has also been shattered. They failed to prevent the assassination of their king in the midst of his own wedding day, and the suspected assassin is the king's Lannister uncle. Not only do they look incompetent, they are divided among themselves. On the other hand, the Tyrells' situation is much stronger now. Tommen is already wrapped around Margaery's pretty little finger, and she knows that the assassination was orchestrated in part by her own family. In Margaery's eyes, the Lannisters look disoriented and lost. Putting on a show trial for one of their own, whom she knows is innocent of any wrongdoing. Whatever power Cersei held over Margaery has now been diminished. <sep>  Q: What was Margaery's motivation to call Cersei 'sister' again? A: Whatever power Cersei held over Margaery has now been diminished.
Solution is here: Why has it been diminished?
Explanation: The question is valid since it is on the same topic and a follow-up of the previous answer in the conversation. The question asks about the reason why the power held over Margaery by Cersei have diminished.

Now, solve this: CONTEXT: It's in Parry's mind. At the start of the scene, people in Grand Central Station are just walking, making noise, chaotic. Parry is looking for Lydia, whom he is in love with. When Parry sees Lydia, classical music starts, and the chaotic crowd is now in sync (in Parry's mind). They begin waltzing around him. Parry has a smile on his face. He follows Lydia through the sweetly dancing couples, all the way across Grand Central Station, and the universe is in harmony, for him. When he finally loses sight of Lydia on the other side, the couples go back to being a crowd, and the music stops and is replaced with the dissonant noises of the throng. Here is the scene: EDIT I also found an interview with director Terry Gilliam (below) regarding that particular scene. In the video, at 2:10, he says, "I just love the idea of Perry being so in love that, you know, the world changes to whatever dreams he has."  <sep>  Q: Why people were dancing at the subway? A: When Parry sees Lydia, classical music starts, and the chaotic crowd is now in sync (in Parry's mind). They begin waltzing around him 
Solution:
What makes the crowd so chaotic?