Instructions: Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title
Input: Maria and Nicholas existed in Trevor's daily delusion because of his guilt about the past hit and run. But how come Ivan exists in his imagination? Are there any clues in movie that can prove Ivan's actuality in Trevor's past? Or is Ivan's figure totally delusional as in schizophrenic people?
Output:
How come Ivan exists in the Machinist?