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: Dana has a birthday party. Sentence 2: She invited all her friends. Sentence 3: They all came except for 2. Sentence 4: They gave her presents. Sentence 5: She had a good time. Choices: a. party. b. Sofa.

a