In this task, you need to replace a letter in the sentence with another given letter.

Sentence: 'a woman sitting on a wooden chair holding a cat'. Replace the letter 'n' with 'q' in the sentence.
a womaq sittiqg oq a woodeq chair holdiqg a cat

Sentence: 'people wait for a train on a snowy sidewalk'. Replace the letter 'n' with 'm' in the sentence.
people wait for a traim om a smowy sidewalk

Sentence: 'three snowboarders are posing in the snow with their boards'. Replace the letter 'n' with 'k' in the sentence.

three skowboarders are posikg ik the skow with their boards