In this task, you need to replace a letter in the sentence with another given letter.
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Question: Sentence: 'a pair of planes in an airport lot parked for boarding and exiting'. Replace the letter 'e' with 'o' in the sentence.

Answer: a pair of planos in an airport lot parkod for boarding and oxiting


Question: Sentence: 'a shot looks down on a person riding a long board'. Replace the letter 'o' with 'u' in the sentence.

Answer: a shut luuks duwn un a persun riding a lung buard


Question: Sentence: 'front of old, coal fired train, in motion'. Replace the letter 'n' with 's' in the sentence.

Answer:
frost of old, coal fired trais, is motios