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: The professor began covering the lecture today. Sentence 2: He explained a lot of material in a small amount of time. Sentence 3: No one bothered to ask questions since they were confused. Sentence 4: Instead of pretending to listen, I walked out of class. Sentence 5: I decided to go to the library and review what was taught today.

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