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

Sentence: 'a clean, sterile bathroom with a shower, toilet, and sink'. Replace the letter 'n' with 'k' in the sentence.
a cleak, sterile bathroom with a shower, toilet, akd sikk

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: 'the shiny airplane is sitting on the ground'. Replace the letter 'n' with 'y' in the sentence.

the shiyy airplaye is sittiyg oy the grouyd