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

Ex Input:
Sentence: 'a man stands in front of a plane on a take off strip'. Replace the letter 'n' with 'o' in the sentence.

Ex Output:
a mao staods io froot of a plaoe oo a take off strip


Ex Input:
Sentence: 'a girl sitting in a chair eating a slice of pizza'. Replace the letter 'i' with 'x' in the sentence.

Ex Output:
a gxrl sxttxng xn a chaxr eatxng a slxce of pxzza


Ex Input:
Sentence: 'a snowboarder riding down a steep slope'. Replace the letter 'a' with 'e' in the sentence.

Ex Output:

e snowboerder riding down e steep slope