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 boy ate his vegetables. Sentence 2: His mother rewarded him. Sentence 3: The boy began to expect rewards. Sentence 4: The mother stopped rewarding the boy. Sentence 5: The boy refused to eat vegetables.

Vegetables