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

Ex Input:
Sentence: 'a woman on a cell phone on  city street'. Replace the letter 'e' with 'a' in the sentence.

Ex Output:
a woman on a call phona on  city straat


Ex Input:
Sentence: 'a woman gives a thumbs up sign while sitting in front of a sandwich'. Replace the letter 's' with 'h' in the sentence.

Ex Output:
a woman giveh a thumbh up hign while hitting in front of a handwich


Ex Input:
Sentence: 'a cat nestled in an arm chair of a living room taking a nap'. Replace the letter 'a' with 'q' in the sentence.

Ex Output:

q cqt nestled in qn qrm chqir of q living room tqking q nqp