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: A little boy set out to explore his neighborhood. Sentence 2: He studied everything he saw. Sentence 3: But he got distracted and soon he was lost! Sentence 4: He cried until a neighbor came to help him. Sentence 5: Maybe he wasn't ready to be an explorer. Choices: a. Carol's Curtains. b. The Explorer.

b