Instructions: In this task, you're given the title of a story consisting of five sentences, numbered 1 through 5. Your job is to determine which two sentences need to be swapped sentences in order to make a story that makes complete sense and is befittingly titled. Indicate your answer using the numbers of the two sentences in order, such as '34' or '25'. The first digit refers to the sentence which should come first in the story.
Input: Title: The Drive. Sentence 1: Somewhere in the midwest, Bill realized he was lost. Sentence 2: Bill was driving across the United States. Sentence 3: Bill tried his phone for help but was still quite lost. Sentence 4: Bill stopped at a gas station to ask for help. Sentence 5: Bill got a cool drink, some directions, and hit the road again!
Output:
21