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

Ex Input:
Sentence: 'a cook sanding between two women inside of a kitchen'. Replace the letter 'n' with 'y' in the sentence.

Ex Output:
a cook saydiyg betweey two womey iyside of a kitchey

Ex Input:
Sentence: 'a man laying stretched out on the back of a boat'. Replace the letter 'h' with 'g' in the sentence.

Ex Output:
a man laying stretcged out on tge back of a boat

Ex Input:
Sentence: 'the beer is walking by himself in the field'. Replace the letter 'h' with 'm' in the sentence.

Ex Output:
tme beer is walking by mimself in tme field