Detailed Instructions: 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.
Problem:Title: Autism. Sentence 1: I put a like on it. Sentence 2: His family has tried several therapies without success. Sentence 3: Their latest therapy was a special diet, which did not work. Sentence 4: My friend posted a link to Autism research on FB. Sentence 5: My friend's son is autistic.
Solution:
15