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: Martha bought groceries and proceeded to go home. Sentence2: When she carried in her groceries she saw the bag leaking. Sentence3: The carton of eggs were squished. Sentence4: Martha went back to the grocery store. Sentence5: She was able to get another carton of eggs for free.
Martha