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'.

Ex Input:
Sentence 1: Today was John's first day of school. Sentence 2: John was new to this school, and had no friends. Sentence 3: John's teacher introduced him to the class. Sentence 4: John was from Japan, and he met Tim who also was from Japan. Sentence 5: John and Tim became good friends. Choices: a. John Made a friend.. b. Restriction.

Ex Output:
a

Ex Input:
Sentence 1: I went to play Blackjack at the casino. Sentence 2: At one point, I was up two hundred dollars. Sentence 3: I was so excited and felt so powerful I tried to win two hundred more. Sentence 4: I played blackjack into the night. Sentence 5: By morning, I was down one hundred dollars. Choices: a. Blackjack. b. Bad stomach ache.

Ex Output:
a

Ex Input:
Sentence 1: Beth and her friend were in the girl scouts. Sentence 2: They were selling cookies for the annual fundraiser. Sentence 3: They went door to door all day selling cookies. Sentence 4: At the end of the day they were both exhausted. Sentence 5: After everything was tallied Beth and her friend had sold the most. Choices: a. Going bowling. b. Girl Scout Cookies.

Ex Output:
b