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: Dora and Lena were children during The Great Depression. Sentence 2: Their parents were very poor and they lived in a very small house. Sentence 3: The girls were thankful to be able to share an orange at Christmas. Sentence 4: It was the only gift their parents could afford. Sentence 5: Dora and Lena grew up to be very frugal except at Christmas! Choices: a. Childhood Lessons. b. Wrong Number.

a