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

Ex Input:
Sentence: 'a man wearing a hat has his cell phone to his ear'. Replace the letter 'g' with 'w' in the sentence.

Ex Output:
a man wearinw a hat has his cell phone to his ear


Ex Input:
Sentence: 'a person snow skiing down a hill while the hold their ski poles'. Replace the letter 'r' with 'g' in the sentence.

Ex Output:
a pegson snow skiing down a hill while the hold theig ski poles


Ex Input:
Sentence: 'surfer walking with board along a beach next to ocean'. Replace the letter 'a' with 'i' in the sentence.

Ex Output:

surfer wilking with boird ilong i beich next to ocein