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

Ex Input:
Sentence: 'a person is riding a motorcycle as part of some kind of performance'. Replace the letter 'm' with 'a' in the sentence.

Ex Output:
a person is riding a aotorcycle as part of soae kind of perforaance

Ex Input:
Sentence: 'a silly cow licking the camera through a fence'. Replace the letter 't' with 'v' in the sentence.

Ex Output:
a silly cow licking vhe camera vhrough a fence

Ex Input:
Sentence: 'a bicycle leaning against a white building with four chickens standing nearby'. Replace the letter 'f' with 'g' in the sentence.

Ex Output:
a bicycle leaning against a white building with gour chickens standing nearby