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

Sentence: 'a couple giraffes walking through a fielded area'. Replace the letter 'e' with 'c' in the sentence.
a couplc giraffcs walking through a ficldcd arca

Sentence: 'a red hydrant is sitting on the sidewalk in the city'. Replace the letter 'n' with 'r' in the sentence.
a red hydrart is sittirg or the sidewalk ir the city

Sentence: 'a man skiing downhill in the winter time'. Replace the letter 'e' with 'q' in the sentence.

a man skiing downhill in thq wintqr timq