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

Ex Input:
Sentence: 'two cats sitting on an office chair next to a desk'. Replace the letter 's' with 'j' in the sentence.

Ex Output:
two catj jitting on an office chair next to a dejk


Ex Input:
Sentence: 'a group of people on a beach flying a kite'. Replace the letter 'p' with 'i' in the sentence.

Ex Output:
a groui of ieoile on a beach flying a kite


Ex Input:
Sentence: 'a cream colored puppy resting its head on a pillow'. Replace the letter 'a' with 'l' in the sentence.

Ex Output:

l crelm colored puppy resting its held on l pillow