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

Ex Input:
Sentence: 'a chocolate cake decorated with strawberries on the side'. Replace the letter 'c' with 'x' in the sentence.

Ex Output:
a xhoxolate xake dexorated with strawberries on the side


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: 'two zebras standing watching two lions walking away'. Replace the letter 'w' with 'c' in the sentence.

Ex Output:

tco zebras standing catching tco lions calking acay