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

Ex Input:
Sentence: 'a kitchen table with a juicer and vegetable on it'. Replace the letter 't' with 'a' in the sentence.

Ex Output:
a kiachen aable wiah a juicer and vegeaable on ia


Ex Input:
Sentence: 'a group of giraffe standing on top of a dirt field'. Replace the letter 'a' with 'y' in the sentence.

Ex Output:
y group of giryffe stynding on top of y dirt field


Ex Input:
Sentence: 'a white nerd with a tie around his sweater'. Replace the letter 'i' with 'q' in the sentence.

Ex Output:

a whqte nerd wqth a tqe around hqs sweater