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

Ex Input:
Sentence: 'a girl riding a horse is jumping the log'. Replace the letter 'a' with 't' in the sentence.

Ex Output:
t girl riding t horse is jumping the log


Ex Input:
Sentence: 'a study features the color green and old-fashioned furniture'. Replace the letter 'e' with 'd' in the sentence.

Ex Output:
a study fdaturds thd color grddn and old-fashiondd furniturd


Ex Input:
Sentence: 'a man waving and greeting a group at a casino'. Replace the letter 'p' with 'd' in the sentence.

Ex Output:

a man waving and greeting a groud at a casino