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: A few days ago I went out to buy some chocolate milk. Sentence 2: I drove all the way out to the store to get some. Sentence 3: While I was at the store I bought some other things I needed. Sentence 4: I was too focused on buying other things. Sentence 5: I forgot to buy the chocolate milk that I had gone to the store for. Choices: a. Homemade Root Beer. b. Chocolate Milk.

b