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

Ex Input:
Sentence: 'a man is standing at the base ball triangle with bat in tow'. Replace the letter 'n' with 'c' in the sentence.

Ex Output:
a mac is stacdicg at the base ball triacgle with bat ic tow

Ex Input:
Sentence: 'a baseball player swinging a bat at a ball'. Replace the letter 's' with 'n' in the sentence.

Ex Output:
a baneball player nwinging a bat at a ball

Ex Input:
Sentence: 'two little kids with big white hates sit at the table and play with them'. Replace the letter 'p' with 'e' in the sentence.

Ex Output:
two little kids with big white hates sit at the table and elay with them