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: John had to go back to school soon. Sentence 2: He went to the store to buy school supplies. Sentence 3: When he got there most of the supplies were sold out. Sentence 4: As he was about to leave the store brought out more supplies. Sentence 5: He bought everything he needed for school. Choices: a. School Supplies.. b. The Missing Tooth.

a