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

Ex Input:
Sentence: 'a giraffe looking over a fence and another reaching over the fence'. Replace the letter 'l' with 'h' in the sentence.

Ex Output:
a giraffe hooking over a fence and another reaching over the fence


Ex Input:
Sentence: 'the color theme in this kitchen is red and black'. Replace the letter 't' with 'v' in the sentence.

Ex Output:
vhe color vheme in vhis kivchen is red and black


Ex Input:
Sentence: 'two baby elephants are playing at the feet of two adult elephants'. Replace the letter 'l' with 'b' in the sentence.

Ex Output:

two baby ebephants are pbaying at the feet of two adubt ebephants