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

Ex Input:
Sentence: 'there is a purse on the floor with its contents spilled out'. Replace the letter 'd' with 'v' in the sentence.

Ex Output:
there is a purse on the floor with its contents spillev out


Ex Input:
Sentence: 'a person holding a small remote key chain'. Replace the letter 'n' with 'j' in the sentence.

Ex Output:
a persoj holdijg a small remote key chaij


Ex Input:
Sentence: 'a bike parked on top of a green grass covered field'. Replace the letter 'l' with 'i' in the sentence.

Ex Output:

a bike parked on top of a green grass covered fieid