Definition: In this task, you're given five sentences, numbered 1 through 5. Your job is to generate a title for the story that makes complete sense. The title must be short, with less than three words, use simple language, and include the main topic of the story.
Input: Sentence 1: I had a nightmare the other night. Sentence 2: It was so scary that it woke me up from my sleep. Sentence 3: It took me a long time to go back to bed. Sentence 4: I finally got back to sleep. Sentence 5: I woke up the next morning and was very tired from having woken up.

Nightmares