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

Ex Input:
Sentence: 'a dog with his tongue out riding on a skateboard'. Replace the letter 's' with 'b' in the sentence.

Ex Output:
a dog with hib tongue out riding on a bkateboard


Ex Input:
Sentence: 'a mouse and keyboard sitting on a wooden desk'. Replace the letter 'a' with 'n' in the sentence.

Ex Output:
n mouse nnd keybonrd sitting on n wooden desk


Ex Input:
Sentence: 'the toilet and sinks are separated by a wall'. Replace the letter 'd' with 'j' in the sentence.

Ex Output:

the toilet anj sinks are separatej by a wall