In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.

[Q]: Sentence1: Kelly's toddler was suffering from a horrible cough. Sentence2: It was keeping her awake at night. Sentence3: Finally, the baby fell asleep in a semi-sitting position on the couch. Sentence4: Kelly was relieved to see that the child wasn't coughing. Sentence5: She decided to leave the child where she was, so she could get rested.
[A]: Toddler

[Q]: Sentence1: Katelyn was so excited. Sentence2: Today was the day her husband Peter was coming home. Sentence3: He'd been away at war for the past eighteen months. Sentence4: She drove to the airport to pick him up. Sentence5: They were reunited and greeted each other with a kiss.
[A]: Peter, Katelyn

[Q]: Sentence1: Whitney was so tired of always feeling tired. Sentence2: She decide to change her diet to see if it would help. Sentence3: After a week Whitney noticed she had way more energy. Sentence4: She was very pleased with the results. Sentence5: Whitney decided to change her diet permanently.
[A]:
Whitney