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.
Q: Title: Canoe Trip. Sentence 1: Afterwards we all had great stories to tell about our canoe trip. Sentence 2: We went on a canoe trip through the many swamps. Sentence 3: I looked over and saw an alligator that was as long as our canoe. Sentence 4: Everyone was very nervous but the alligator just ignored us. Sentence 5: One day I went to the Everglades with my friends.
A:
15