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

Sentence: 'some tracks for a rail way system near a building'. Replace the letter 'a' with 'h' in the sentence.
some trhcks for h rhil why system nehr h building

Sentence: 'a black cat is sniffing a glass bottle'. Replace the letter 'c' with 'f' in the sentence.
a blafk fat is sniffing a glass bottle

Sentence: 'man takes a photo of a woman brushing her teeth in the mirror'. Replace the letter 'r' with 'b' in the sentence.

man takes a photo of a woman bbushing heb teeth in the mibbob