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.
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Question: Title: Dad. Sentence 1: His dad was picking up dog poop in the back yard. Sentence 2: He was usually in his chair. Sentence 3: He wasn't in his chair. Sentence 4: He looked in the back yard. Sentence 5: The boy looked for his dad.

Answer: 51

Question: Title: Photography. Sentence 1: Marlene liked to take pictures. Sentence 2: People loved how Marlene's pictures came out. Sentence 3: She even had taken photography classes. Sentence 4: People offered to pay her to take pictures at events. Sentence 5: Marlene started her own photography business.

Answer: 23

Question: Title: Skipping Lunch. Sentence 1: On the way home she stopped at a fast food restaurant. Sentence 2: She was starting to get hungry. Sentence 3: Carla left work. Sentence 4: Carla had skipped her lunch. Sentence 5: Carla ate at the restaurant.

Answer:
41