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.
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Question: Sentence1: They planted a sunflower garden at their house in the city. Sentence2: They watched it grow all summer. Sentence3: The traffic by their house got heavy when the sunflowers bloomed. Sentence4: Many people yelled something nice as they drove past the garden. Sentence5: When the sunflowers died the traffic went back to normal.

Answer: Other people

Question: Sentence1: Tim bet his friend Todd that he couldn't eat a grasshopper. Sentence2: Tim caught a large green grasshopper in his front lawn. Sentence3: Tim teased Todd for hours. Sentence4: Finally Todd gave in and ate the grasshopper. Sentence5: He spit it out because it tasted so disgusting.

Answer: Tim, Grasshopper, Friend

Question: Sentence1: My mom used to go sledding by her parent's cottage. Sentence2: They would bring the sled up these giant sand dunes that were frozen. Sentence3: They would slide down them, but one time they had the unexpected. Sentence4: They went too fast and went all the way down to the water. Sentence5: The lake wasn't completely frozen so they got soaking wet.

Answer:
I (myself), My mom's parents, My mom