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

Ex Input:
Sentence: 'a man extends his arm with a frisbee in hand as another reaches to grab it while teammates watch'. Replace the letter 'a' with 'g' in the sentence.

Ex Output:
g mgn extends his grm with g frisbee in hgnd gs gnother regches to grgb it while tegmmgtes wgtch


Ex Input:
Sentence: 'a dog drinking out of a bowl of water'. Replace the letter 'w' with 'k' in the sentence.

Ex Output:
a dog drinking out of a bokl of kater


Ex Input:
Sentence: 'a man is on his cell phone outside under an umbrella'. Replace the letter 'm' with 'b' in the sentence.

Ex Output:

a ban is on his cell phone outside under an ubbrella