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.
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Question: Sentence1: Mary woke up Monday morning with a headache. Sentence2: She knew that she had to go to work in just one hour. Sentence3: After she drank her morning coffee she set out to work. Sentence4: Upon her arrival, her boss told her that her co-worker called in sick. Sentence5: That meant that Mary would have to pull a double shift!

Answer: Boss, Mary, Co-worker

Question: Sentence1: Jon and his father were going hunting in the woods. Sentence2: They saw a deer through the bushes. Sentence3: Trying to keep quiet, they inched towards it. Sentence4: Jon stepped on a branch, and the deer was scared off. Sentence5: The deer would live another day.

Answer: A deer, Jon, Father

Question: Sentence1: Glenn bought his cats a feather toy. Sentence2: The cats seemed to love when Glenn played with them with the toy. Sentence3: Eventually, though, they stole it and hid under the bed with it. Sentence4: When Glenn finally retrieved the toy, the cats had torn it apart. Sentence5: He had to get them a new one the next day.

Answer:
Cats, Glenn