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: When Lana was pregnant, she was in a car accident. Sentence2: She was taken to the hospital for x-rays. Sentence3: Months later, the baby was born with a clubfoot. Sentence4: Lana sued the hospital for giving her x-rays while pregnant. Sentence5: She received a settlement, which she put aside for her son.

Output: Baby, Lana

Input: Consider Input: Sentence1: Zack was always worried about getting sick. Sentence2: And he became so worried about the air that he wore a respirator. Sentence3: He wore it during his entire school day. Sentence4: And he told other students that the air quality was terrible. Sentence5: Zack still ended up getting sick and worried much more.

Output: Other students, Zack

Input: Consider Input: Sentence1: Ronnie was excited to be in the top two. Sentence2: He made sure his last dish was his greatest. Sentence3: When the judges came to judge they chose Ronnie. Sentence4: Ronnie couldn't be more happier. Sentence5: He started jumping for joy.
Output: Judges, Ronnie