TASK DEFINITION: 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.
PROBLEM: Sentence1: Shelly wanted to make a music video for his new song. Sentence2: He got some friends together and hired a host of extras. Sentence3: They danced on cars that they parked in a city. Sentence4: The video was a moderate success. Sentence5: Shelly saw a slight bump in downloads of his song.

SOLUTION: Extras, Friends, Shelly

PROBLEM: Sentence1: It was sunny when Alice went for an afternoon walk. Sentence2: She wore light clothing because it was very hot. Sentence3: During her walk it began to rain unexpectedly. Sentence4: Alice began to run home. Sentence5: Alice was soaked by the time she arrived home.

SOLUTION: Alice

PROBLEM: Sentence1: Ken went skiing with friends. Sentence2: He was new to the whole thing. Sentence3: They all went too high up and he tried to follow. Sentence4: Ken tumbled the entire way down. Sentence5: He stopped skiing and just stayed by a fireplace.

SOLUTION:
Ken, Friends