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

Ex Input:
Sentence: 'a male holding a baseball bat standing on a big white star'. Replace the letter 'a' with 'i' in the sentence.

Ex Output:
i mile holding i bisebill bit stinding on i big white stir


Ex Input:
Sentence: 'a white plate topped with two sandwich halves and a pile of potatoes chips'. Replace the letter 'o' with 'x' in the sentence.

Ex Output:
a white plate txpped with twx sandwich halves and a pile xf pxtatxes chips


Ex Input:
Sentence: 'a large mexicana airplane on an airport runway'. Replace the letter 'a' with 'u' in the sentence.

Ex Output:

u lurge mexicunu uirplune on un uirport runwuy