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'.

Example Input: Sentence 1: We used to live near train tracks. Sentence 2: We could hear the horns at times. Sentence 3: I am a train buff and loved the sound. Sentence 4: We moved and I thought we were away from the trains. Sentence 5: Last week I heard train horns from a different railroad. Choices: a. Sample. b. Trains.
Example Output: b

Example Input: Sentence 1: Chantel was hanging out with her boyfriend having a nice day. Sentence 2: She noticed her boyfriend acting weird and he asked to talk. Sentence 3: She listened, devastated when he admitted he wanted to break up. Sentence 4: She tried to argue but soon realized it was futile. Sentence 5: She left his house and went home to mend her broken heart. Choices: a. Dumped. b. The Cell Phone.
Example Output: a

Example Input: Sentence 1: One day Keith was playing with his son Bryson. Sentence 2: He heard a loud noise bang from inside the house. Sentence 3: He went to check on his wife lyndie. Sentence 4: It was too late. Sentence 5: Lyndie had been crushed by the family dresser. Choices: a. Too Close. b. Tragedy strikes.
Example Output:
b