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

Ex Input:
Sentence: 'a row of lawn chairs with umbrellas over them'. Replace the letter 'e' with 'x' in the sentence.

Ex Output:
a row of lawn chairs with umbrxllas ovxr thxm


Ex Input:
Sentence: 'vintage cartoon elephant and cartoon dog paper tags'. Replace the letter 'p' with 'r' in the sentence.

Ex Output:
vintage cartoon elerhant and cartoon dog rarer tags


Ex Input:
Sentence: 'a young man wearing a womans skirt and holding a handbag'. Replace the letter 'h' with 'f' in the sentence.

Ex Output:

a young man wearing a womans skirt and folding a fandbag