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

Ex Input:
Sentence: 'a woman on a cell phone on  city street'. Replace the letter 'e' with 'a' in the sentence.

Ex Output:
a woman on a call phona on  city straat


Ex Input:
Sentence: 'a plate of food which contain smothered meat, potatoes and broccoli'. Replace the letter 'p' with 'v' in the sentence.

Ex Output:
a vlate of food which contain smothered meat, votatoes and broccoli


Ex Input:
Sentence: 'a digital fireplace glowing near a bed with white sheets and a puppy'. Replace the letter 'a' with 'f' in the sentence.

Ex Output:

f digitfl fireplfce glowing nefr f bed with white sheets fnd f puppy