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

Ex Input:
Sentence: 'a sad looking dog getting a bath in a sink'. Replace the letter 't' with 'c' in the sentence.

Ex Output:
a sad looking dog geccing a bach in a sink


Ex Input:
Sentence: 'a red train sitting at an empty station'. Replace the letter 'i' with 'h' in the sentence.

Ex Output:
a red trahn shtthng at an empty stathon


Ex Input:
Sentence: 'the man is cooking his chicken for dinner'. Replace the letter 'r' with 'y' in the sentence.

Ex Output:

the man is cooking his chicken foy dinney