Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Title: Cliff. Sentence 1: I was playing Pokemon Go with my friend. Sentence 2: We were running around to various Pokestops. Sentence 3: I fell about 50 feet, and sustained a broken ankle. Sentence 4: I wasn't looking where I was going, and walked right off a cliff. Sentence 5: My friend called an ambulance.
Student:
34