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: 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.
[A]: Colleague, Germaine

[Q]: Sentence1: Martha sat quietly on the subway as she waited for her stop. Sentence2: An elderly woman boarded the train and held onto the subway rail. Sentence3: Martha felt bad. Sentence4: She stood up and offered her seat to the elderly woman. Sentence5: The woman thanked Martha enthusiastically.
[A]: Woman, Martha, Elderly woman

[Q]: Sentence1: Mark was swimming with his family. Sentence2: His workplace had called with a few questions for him. Sentence3: He was wading in the water while talking on the phone. Sentence4: Suddenly, the phone slipped from his hand. Sentence5: It fell into the water and broke immediately.
[A]:
Workplace, Family, Mark