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: Kia went to bed one October night, ready for fall. Sentence 2: But when she awoke, it was very hot! Sentence 3: The fabled Indian Summer phenomenon had arrived. Sentence 4: All week, Kia played outside and swam in the lake. Sentence 5: Kia enjoyed the unseasonably warm weather! Choices: a. Air Conditioner. b. Indian Summer.

b