In this task, you're given the title and three arbitrary sentences out of a five-sentence story. You are also given three additional sentence options, a, b, and c, that may or may not belong to the story. Your job is to pick the two options that seamlessly connect with the rest of the story and their positions in the sentence order of the story; note that the selected choices may fit into the story at any point. Your answer must be in the form of '2a, 5b', where '2a' means the candidate sentence 'a' will be inserted as the 2nd sentence in the story. The answer must also be in the order of the selected choices, i.e., '2a, 5b' is allowed, and '5b, 2a' is not allowed. If options are equally plausible, pick the ones that make more sense.

Title: Shane wanted to be a dog trainer. He spent 3 hours a day with him. He instead taught it to howl on command. Choices: a. He couldn't teach the dog how to sit. b. They started to talk to each other. c. He tried to train his best friend's dog.
4a, 2c

Title: I wrote down what I needed and grabbed some some cash. I drove to the restaurant where she works. When she got back from town she gave me what I needed and my change. Choices: a. I told her about what I needed and gave her the money. b. He loved it so much the band played it at the first football game. c. I had to ask a local waitress to pick something up for me in town.
4a, 1c

Title: Thomas bought a train set. They ran the train around the track for a few minutes. Thomas thought that it was pretty boring. Choices: a. He gave the train set to his neighbor the next day. b. I had a great time playing video games with my friends. c. His father helped him set it up in the garage.
5a, 2c