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

Ex Input:
Sentence: 'a waterview with multiple boats in the water'. Replace the letter 'r' with 'w' in the sentence.

Ex Output:
a watewview with multiple boats in the watew


Ex Input:
Sentence: 'a shot looks down on a person riding a long board'. Replace the letter 'o' with 'u' in the sentence.

Ex Output:
a shut luuks duwn un a persun riding a lung buard


Ex Input:
Sentence: 'horses drink and graze the field and water'. Replace the letter 'i' with 'c' in the sentence.

Ex Output:

horses drcnk and graze the fceld and water