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: Christian wanted to learn to bake. Sentence2: His mother gave him her cookbook. Sentence3: He picked a recipe that was easy. Sentence4: He followed the instructions carefully. Sentence5: He put the cake in the oven to bake and it came out great.
A:
Christian's mother, Christian