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

Sentence: 'a open entrance leading to a set of closed doors'. Replace the letter 'd' with 'f' in the sentence.
a open entrance leafing to a set of closef foors

Sentence: 'a male holding a baseball bat standing on a big white star'. Replace the letter 'a' with 'i' in the sentence.
i mile holding i bisebill bit stinding on i big white stir

Sentence: 'a man riding a skateboard down the middle of a street'. Replace the letter 'r' with 'o' in the sentence.

a man oiding a skateboaod down the middle of a stoeet