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: Galen's father loved sailboats. Sentence2: Galen never had time to learn to sail. Sentence3: One day, he decided that he wanted to try it out. Sentence4: Galen asked his father to teach him to sail. Sentence5: He now has a new favorite hobby.
[A]: Galen, Father

[Q]: Sentence1: Val drove her car down a steep hill. Sentence2: Her brakes did not seem to slow her down at all. Sentence3: Val had to steer into a parked car to slow her down. Sentence4: The two cars crashed together in a loud bang. Sentence5: This was enough to bring Val's car to a stop.
[A]: Val

[Q]: Sentence1: Nicholas was a professional golfer and wanted to retire. Sentence2: There was one last tournament coming up and he wanted to win it. Sentence3: Nicholas didn't do well in the tournament and ended up last place. Sentence4: He did not want to end his career on a loss so he kept playing. Sentence5: He continues to play and will quit after his next big win.
[A]:
Nicholas