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

Ex Input:
Sentence: 'a man is standing with this luggage next to a railroad track'. Replace the letter 'g' with 'l' in the sentence.

Ex Output:
a man is standinl with this lullale next to a railroad track


Ex Input:
Sentence: 'a man eats while holding himself up in a one-hand push up position'. Replace the letter 'i' with 'p' in the sentence.

Ex Output:
a man eats whple holdpng hpmself up pn a one-hand push up posptpon


Ex Input:
Sentence: 'a person flying a kite high up in the air'. Replace the letter 'a' with 'z' in the sentence.

Ex Output:

z person flying z kite high up in the zir