Given the task definition and input, reply with output. 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: Sara wanted to make her community more eco-friendly. Sentence2: She started a recycling program. Sentence3: There, she taught people how to recycle various types of items. Sentence4: Soon her neighbors were recycling almost everything they could! Sentence5: Sara felt very good about her environmental impact.
Sara, Her neighbors, People