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

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 fancy clock is lit up on the street'. Replace the letter 'o' with 'f' in the sentence.
a fancy clfck is lit up fn the street

Sentence: 'i think this is a huge food court'. Replace the letter 'n' with 'a' in the sentence.

i thiak this is a huge food court