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

Ex Input:
Sentence: 'a man is on a bed with a cat and laptop computer'. Replace the letter 'e' with 'n' in the sentence.

Ex Output:
a man is on a bnd with a cat and laptop computnr


Ex Input:
Sentence: 'a crowd stands under a set of lights in the ceiling and one person holds up a cell phone'. Replace the letter 'r' with 'f' in the sentence.

Ex Output:
a cfowd stands undef a set of lights in the ceiling and one pefson holds up a cell phone


Ex Input:
Sentence: 'a stainless steel refrigerator in a kitchen corner'. Replace the letter 'e' with 'd' in the sentence.

Ex Output:

a stainldss stddl rdfrigdrator in a kitchdn corndr