Q: 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.
Sentence1: Leo's mother took him to the park. Sentence2: Leo wanted to swing on the swing set. Sentence3: Leo was swinging very high. Sentence4: Leo fell from the swing and skinned his knee. Sentence5: Leo's mother took him home and bandaged his knee.
A:
Leo's mother, Leo