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

Ex Input:
Sentence: 'a man standing on a tennis court holding a tennis racquet'. Replace the letter 'c' with 'y' in the sentence.

Ex Output:
a man standing on a tennis yourt holding a tennis rayquet


Ex Input:
Sentence: 'four people are playing an interesting game in the park'. Replace the letter 'e' with 'x' in the sentence.

Ex Output:
four pxoplx arx playing an intxrxsting gamx in thx park


Ex Input:
Sentence: 'two pizzas sitting on top of a table'. Replace the letter 't' with 'o' in the sentence.

Ex Output:

owo pizzas siooing on oop of a oable