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

Ex Input:
Sentence: 'closeup of two teddy bears in red scarves and a brown teddy bear'. Replace the letter 'i' with 'y' in the sentence.

Ex Output:
closeup of two teddy bears yn red scarves and a brown teddy bear

Ex Input:
Sentence: 'a person flying through the air on the kite board'. Replace the letter 'h' with 'l' in the sentence.

Ex Output:
a person flying tlrougl tle air on tle kite board

Ex Input:
Sentence: 'a compartmentalized tray of food is seen in this image'. Replace the letter 'f' with 'l' in the sentence.

Ex Output:
a compartmentalized tray ol lood is seen in this image