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

Ex Input:
Sentence: 'a metal bowl filled with lots of red apples'. Replace the letter 'b' with 'x' in the sentence.

Ex Output:
a metal xowl filled with lots of red apples


Ex Input:
Sentence: 'a sign sitting on the side of a snow covered slope'. Replace the letter 'e' with 'g' in the sentence.

Ex Output:
a sign sitting on thg sidg of a snow covgrgd slopg


Ex Input:
Sentence: 'several kids playing soccer in front of parked cars'. Replace the letter 'e' with 'a' in the sentence.

Ex Output:

savaral kids playing soccar in front of parkad cars