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

Ex Input:
Sentence: 'a man is at bat at a baseball game with a crowd watching'. Replace the letter 't' with 'f' in the sentence.

Ex Output:
a man is af baf af a baseball game wifh a crowd wafching


Ex Input:
Sentence: 'a woman holding a tennis racket getting ready to hit a tennis ball'. Replace the letter 'r' with 'l' in the sentence.

Ex Output:
a woman holding a tennis lacket getting leady to hit a tennis ball


Ex Input:
Sentence: 'a large vase on a table with flowers in it'. Replace the letter 'o' with 'n' in the sentence.

Ex Output:

a large vase nn a table with flnwers in it