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.

Example Input: Sentence1: Larry was at a restaurant. Sentence2: He had called a cab to pick him up. Sentence3: It was getting to be almost an hour and no cab arrived. Sentence4: Larry called to ask what was up. Sentence5: It turned out that there was a mix up.
Example Output: Larry

Example Input: Sentence1: Maggie's 60th Birthday is approaching. Sentence2: She is fearful of growing old. Sentence3: Watching a commercial she sees an anti-aging cream. Sentence4: Maggie reaches into her purse for her credit card. Sentence5: She purchases the cream as a birthday gift to herself.
Example Output: Maggie

Example Input: Sentence1: I bought a mixed bag of seeds at the hardware store one day. Sentence2: I went home and threw them in my garden to see what would happen. Sentence3: Every day I watered them and waited for sprouts. Sentence4: One day I saw that I had sprouts and identified them as mint. Sentence5: I prepared a mojito and waited for the garnish to grow.
Example Output:
I (myself)