instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a fire fighter climbs onto the roof of a market with a ladder'. Replace the letter 'r' with 'k' in the sentence.
answer:
a fike fightek climbs onto the koof of a makket with a laddek

question:
Sentence: 'a person snow skiing down a hill while the hold their ski poles'. Replace the letter 'r' with 'g' in the sentence.
answer:
a pegson snow skiing down a hill while the hold theig ski poles

question:
Sentence: 'a dog in the air with a firsbee in its mouth and a man standing next to the dog'. Replace the letter 'a' with 'p' in the sentence.
answer:
p dog in the pir with p firsbee in its mouth pnd p mpn stpnding next to the dog