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: Ellen had read a good book. Sentence 2: The book had been turned into a movie. Sentence 3: The movie didn't follow the book closely. Sentence 4: Ellen watched the movie. Sentence 5: She was disappointed in the film. Choices: a. Based on a Book. b. Training.

a