Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title

Example Input: In episode 4 of season 1 we see Locke taking its first look at "the monster" (~30:00), while hunting boars on his own. He seems to be looking straight at something, not just randomly towards the direction of the noises. But then (~38:53), when asked by Walt's father, he says he didn't see it.  Why does he lie?
Example Output: Why didn't Locke say he saw the monster?

Example Input: At the end of the movie 3:10 to Yuma, we see Ben killed his teammate Charlie after failing to save Dan. We have seen that Ben tried to cooperate with Dan during the second half of the movie. So, was Ben feeling weak towards Dan? It's very unnatural given the role he has portrayed in the movie. Ben is a cold-hearted mass murderer. How come has he changed? And why did he try to save Dan and kill Charlie? Am I missing something?
Example Output: Why did Ben try to help Dan?

Example Input: In the movie Deathly Hallows Part 1, Harry Potter did not disguise himself using polyjuice potion at the wedding of Bill and Fleur. But in the book he was disguised as a cousin of the Weasleys, Barny Weasley, because there were threats.  Shouldn't he have disguised himself, as Death Eaters might be around looking for him? Why did they not take that matter seriously in the movie?
Example Output:
Why did Harry not use Polyjuice Potion at the wedding of Bill and Fleur?