Given the task definition and input, reply with output. 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'.

Sentence 1: The man found a crate. Sentence 2: He couldn't get it open. Sentence 3: He looked for a hammer at home. Sentence 4: He went back to the crate with the hammer. Sentence 5: The crate was gone. Choices: a. Crate. b. Anna's wedding day.
a