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

Ex Input:
Sentence: 'a baseball player is throwing a ball across the dirt field'. Replace the letter 'a' with 't' in the sentence.

Ex Output:
t btsebtll pltyer is throwing t btll tcross the dirt field


Ex Input:
Sentence: 'the large modern bathroom has two sinks and a large tub'. Replace the letter 't' with 'j' in the sentence.

Ex Output:
jhe large modern bajhroom has jwo sinks and a large jub


Ex Input:
Sentence: 'a man sitting on a luggage cart inside of an airport'. Replace the letter 't' with 'a' in the sentence.

Ex Output:

a man siaaing on a luggage cara inside of an airpora