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: Tim was living in a nice apartment. Sentence 2: He had lived there for a few years. Sentence 3: He decided it was a time for a change. Sentence 4: He searched online for a new apartment and went there to visit. Sentence 5: He signed a new lease and moved there immediately. Choices: a. Serge. b. Moving.

b