In this task, you're given the title of a five-sentence story, the first four sentences, and two options for the fifth sentence as a and b. Your job is to pick the sentence option that seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.

Ex Input:
Title: first word. Sentence 1: Ida's baby was babbling. Sentence 2: Then one morning she said her first word. Sentence 3: It was Mama! Sentence 4: Ida was so proud. Choices: a. She almost cried with happiness! b. She also found a smashed centipede in the same area!

Ex Output:
a

Ex Input:
Title: King of the Mountain. Sentence 1: Jose was very strong for his age. Sentence 2: Every day at recess his favorite game was king of the mountain. Sentence 3: He would win every time. Sentence 4: No one could take Jose off his perch. Choices: a. Jonas and his friend loved to swim. b. Jose really was king of the mountain.

Ex Output:
b

Ex Input:
Title: Lost Engagement Ring. Sentence 1: Landon was recently engaged. Sentence 2: He was taking his new fiancee's engagement ring to be resized. Sentence 3: On his way to the jeweler he stopped for a hot dog. Sentence 4: The ring must have fallen from his pocket while he was eating. Choices: a. He was lucky enough to find the ring after hours of frantic panic. b. He was overjoyed when it arrived only a few days later.

Ex Output:
a