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

Ex Input:
Sentence: 'a person is looking out of a large window'. Replace the letter 'o' with 'p' in the sentence.

Ex Output:
a perspn is lppking put pf a large windpw


Ex Input:
Sentence: 'two knives are embedded in a wooden table'. Replace the letter 'a' with 'l' in the sentence.

Ex Output:
two knives lre embedded in l wooden tlble


Ex Input:
Sentence: 'a close up of a cow next to a tree'. Replace the letter 'a' with 'r' in the sentence.

Ex Output:

r close up of r cow next to r tree