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: Julia taught a class of fifth graders. Sentence 2: One of her students, Mark was always making trouble. Sentence 3: Mark had recently gotten an A+ on a math test. Sentence 4: Julia suspected that Mark had cheated to get the grade. Sentence 5: However, Julia had no proof.

The Cheater