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

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

Sentence: 'a man has his hand on top of a blender'. Replace the letter 'd' with 'o' in the sentence.
a man has his hano on top of a blenoer

Sentence: 'a person that is about to throw a frisbee'. Replace the letter 'r' with 'o' in the sentence.
a peoson that is about to thoow a foisbee