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.

Example Input: Title: The Lost Bear. Sentence 1: Lucy lost her stuffed bear. Sentence 2: She was very upset and cried all day. Sentence 3: Her mother looked for the bear underneath the couch. Sentence 4: The bear had been there the entire time. Choices: a. Lucy was happy to be reunited with the bear. b. His mom bought him a new phone afterwards.
Example Output: a

Example Input: Title: Criss-Cross Applesauce. Sentence 1: Sam sat criss-cross applesauce on the couch. Sentence 2: She was almost finished with her homework. Sentence 3: She started to uncross her legs. Sentence 4: That's when she felt a sharp pain from her ankle. Choices: a. The dog was not hungry anymore. b. Her ankle had popped out of its socket.
Example Output: b

Example Input: Title: Gift Card. Sentence 1: For Christmas I was given a gift card to my favorite restaurant. Sentence 2: I did not use it for a few months. Sentence 3: In March, I decided to use it for my anniversary. Sentence 4: When we went to pay, the card did not work. Choices: a. Apparently the gift giver never activated the card for me. b. He replaced her shingles for her, and she was grateful.
Example Output:
a