Detailed Instructions: In this task, you're given four sentences of a story written in natural language in which one part is missing. Your job is to predict the position and missing part of the story and return in the following format: position, missing part. The missing part is a sentence that completes the story, and the position is the number of the missing sentence in the new story.
Problem:Sentence1: Anna was walking to school one morning. Sentence2: A car suddenly flew into it and struck her. Sentence3: Anna was crushed and her leg was broken. Sentence4: Anna sued them but got nothing because they had no insurance.
Solution:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
2, She entered the crosswalk on the main road.