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: Terry was substitute teaching at school. Sentence 2: The teacher had left him no instructions. Sentence 3: He told the children to color in their coloring books. Sentence 4: The children enjoyed having Terry as a sub. Sentence 5: They were upset when their teacher came back.

The Sub