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

Ex Input:
Sentence: 'a woman standing in front of a bear in an enclosure'. Replace the letter 'e' with 'r' in the sentence.

Ex Output:
a woman standing in front of a brar in an rnclosurr


Ex Input:
Sentence: 'a man is ordering food from a mobile food truck'. Replace the letter 'r' with 'q' in the sentence.

Ex Output:
a man is oqdeqing food fqom a mobile food tquck


Ex Input:
Sentence: 'two people on motorbikes very high in the air'. Replace the letter 't' with 'c' in the sentence.

Ex Output:

cwo people on mocorbikes very high in che air