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: Jim was planning on buying his first house. Sentence 2: He was very nervous about picking the right place. Sentence 3: He took several trips to different houses. Sentence 4: He finally found the one he just couldn't live without. Sentence 5: Jim signed the contract to buy the house grinning ear to ear. Choices: a. NASA. b. Jim buys a house.

b