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.

Input: Consider Input: Sentence1: Tom took up the sport of golf in April. Sentence2: Soon he became frustrated that his golf score was not improving. Sentence3: He decided to seek the help of a golf pro from his club. Sentence4: The pro spent numerous hours with Tom working on fundamentals. Sentence5: Tom quickly shaved ten points from his handicap.

Output: Club, Golf pro, Golf, Tom

Input: Consider Input: 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.

Output: Alice

Input: Consider Input: Sentence1: Jim needed to buy a new hard drive. Sentence2: But he didn't want to spend much money. Sentence3: So he bought a hard drive with less space than he wanted. Sentence4: But soon, he ended up buying another hard drive for more space. Sentence5: Jim regret not just spending more on a larger hard drive at first.
Output: Jim