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: Samurai's Pride. Sentence 1: He wandered the streets, looking for work. Sentence 2: Hiro was a 17th century Samurai in Japan. Sentence 3: One morning he was approached by an old man. Sentence 4: The man offered Hiro a large sum of money to kill a shop owner. Sentence 5: Hiro declined, as his pride forbid him from killing innocents.
A:
21