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.

[EX Q]: Sentence1: Katherine was at home watching TV. Sentence2: Suddenly she got a phone call. Sentence3: Her dad had had a heart attack and was in the hospital. Sentence4: She quickly went to the hospital to be with him. Sentence5: Luckily, he recovered in a couple of days and was alright.
[EX A]: Dad, Katherine

[EX Q]: Sentence1: Germaine was a scientist working on a secret NASA project. Sentence2: It was meant to help design a ship that could travel to Mars. Sentence3: He was really attracted to a pretty woman who was his colleague. Sentence4: They finally got together and became very intimate. Sentence5: Months later he learned she was a Russian spy and he was fired.
[EX A]: Colleague, Germaine

[EX Q]: Sentence1: Susie was having a costume party. Sentence2: She invited all of her friends. Sentence3: She dressed up as a cat. Sentence4: Her friends loved it. Sentence5: Susie ended up winning the costume contest at the party.
[EX A]:
Susie, Her friends