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

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: 'some tracks for a rail way system near a building'. Replace the letter 'a' with 'h' in the sentence.

Ex Output:
some trhcks for h rhil why system nehr h building


Ex Input:
Sentence: 'some people are looking at a giraffe in its pen'. Replace the letter 'p' with 'b' in the sentence.

Ex Output:

some beoble are looking at a giraffe in its ben