Given the task definition and input, reply with output. 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.

Title: The Car on the Road. Sentence 1: Sam was driving down a highway. Sentence 2: He saw a car on the side of the road. Sentence 3: It appeared the car had a flat tire. Sentence 4: Sam got back in his car and drove away. Sentence 5: There was no one around the car.

45