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

Ex Input:
Sentence: 'a little girl laying on a boogie board next to the ocean'. Replace the letter 't' with 'm' in the sentence.

Ex Output:
a limmle girl laying on a boogie board nexm mo mhe ocean


Ex Input:
Sentence: 'group playing frisbee with runners in grassy field'. Replace the letter 'l' with 'q' in the sentence.

Ex Output:
group pqaying frisbee with runners in grassy fieqd


Ex Input:
Sentence: 'guy and girl posing all dressed up for prom'. Replace the letter 'u' with 'l' in the sentence.

Ex Output:

gly and girl posing all dressed lp for prom