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: Andrew realized his car was filthy. Sentence 2: So Andrew decided to wash his car. Sentence 3: Andrew filled up buckets full of soup and water. Sentence 4: He began to wipe down his car. Sentence 5: It took Andrew twenty minutes to was his car and it looked brand new. Choices: a. Washing his car. b. Pioneer times.

a