Q: 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: Dad saves Son. Sentence 1: The family was at granddad's rural cabin. Sentence 2: Granddad said his rifle was not loaded and gave it to Jim. Sentence 3: Jim aimed at his younger brother's head. Sentence 4: Dad aimed out a window into a hill and the gun fired. Sentence 5: Dad grabbed the gun and said never point a gun at a person.
A:
45