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: Roger wanted to be an astronaut when he grew up. Sentence 2: As a kid, he played with toy rockets and space men. Sentence 3: When they closed the space shuttle program, Roger was sad. Sentence 4: He knew he still wanted to reach the sky. Sentence 5: Now, Roger is working on getting his pilot's license to fly planes. Choices: a. Joanna's Father. b. Roger's Dream.

b