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: I have a friend who owns a (very) small theater... so some of this probably isn't "official" (I know they bend the rules a bit at times). Also, they operate only on film, I'm not for sure about digital Anyway, one thing a lot of people don't realize is that film is usually shipped on 6 or so small reels. The movie theater then tapes together these reels into usually 1 or 2 big reels(depending on what's capable of the projector and the size of the movie). During this time, they add on small preview reels. From what I can tell, usually 2 or 3 previews are shipped with a particular movie. It's not mandatory that theaters put them on, but they are usually the latest, so it gives theaters a good incentive. Unlike movie reels which must be returned, preview reels can be kept by the movie theater. So the movie theater can of course add on more previews if they wish as well. I believe it's allowed for them to add no previews on as well. Of course, with digital there is much less choice. I believe the previews with digital movies are completely fixed.. So, it's completely up to the studios.. As for how they select which previews are shipped with blockbuster movies, see the other answers  <sep>  Q: What factors go into determining what trailers are played before movies? A: one thing a lot of people don't realize is that film is usually shipped on 6 or so small reels  Q: What do the 6 or so small reels have to do with trailers? A: The movie theater then tapes together these reels into usually 1 or 2 big reels(depending on what's capable of the projector and the size of the movie  Q: What happens after the reels are taped together? A: During this time, they add on small preview reels  Q: Is this always the way trailers are added? A: the movie theater can of course add on more previews if they wish as well. I believe it's allowed for them to add no previews on as well  Q: Can you tell me anything else about trailers and how they are selected? A: with digital there is much less choice. I believe the previews with digital movies are completely fixed.. So, it's completely up to the studios 
Solution:
Do the studios have a say in what previews or trailers are shown?