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: A Prom Crash. Sentence 1: Lily was enjoying the music at her school prom. Sentence 2: Everyone was having a good time when an announcement was made. Sentence 3: It was a very sad memory for all of the students there. Sentence 4: Everyone sobered up immediately and began mourning. Sentence 5: Some kids from school had had a car crash on their way.
53