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 row of lawn chairs with umbrellas over them'. Replace the letter 'e' with 'x' in the sentence.

Ex Output:
a row of lawn chairs with umbrxllas ovxr thxm


Ex Input:
Sentence: 'a woman is standing in a store with a stuffed bear on her head'. Replace the letter 's' with 'c' in the sentence.

Ex Output:

a woman ic ctanding in a ctore with a ctuffed bear on her head