Definition: In this task, you're given five sentences, numbered 1 through 5, and two options a and b for possible titles for the story. Your job is to choose the title that better fits the story. Indicate your choice by 'a' or 'b'.
Input: Sentence 1: The United States entered World War II. Sentence 2: Industry began to grow. Sentence 3: People went off to war. Sentence 4: The war went for a while. Sentence 5: The Allied forces won. Choices: a. Rodeo. b. World Event.

b