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? If you are still confused, see the following example:
Title: Marcus Buys Khakis. Sentence 1: Marcus needed clothing for a business casual event. Sentence 2: The pair he bought fit him perfectly. Sentence 3: He decided to buy a pair of khakis. Sentence 4: All of his clothes were either too formal or too casual. Sentence 5: Marcus was happy to have the right clothes for the event.
Solution: 24
Reason: Marcus's reasons for buying khakis is established, followed by his purchase of them and reaction.

Now, solve this instance: Title: Trip to the fair. Sentence 1: Allie then had to be taken to the hospital. Sentence 2: They decided to go on the scary rides. Sentence 3: Allie picked one and they went inside of it. Sentence 4: The ride went to a stop and they fell out. Sentence 5: Allie went to the fair with her sisters.
Student:
15