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.
Input: Sentence1: Justin loved to make pudding. Sentence2: He liked the kind that was made on the stove. Sentence3: He liked to heat the milk and mix the pudding into it. Sentence4: When it had cooled, he would eat the whole pan. Sentence5: Justin made the delicious treat every night.
Output:
Justin