TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'two tennis players shaking hands over the net'. Replace the letter 'n' with 'f' in the sentence.

SOLUTION: two teffis players shakifg hafds over the fet

PROBLEM: Sentence: 'an older red airplane is going straight up'. Replace the letter 'h' with 'z' in the sentence.

SOLUTION: an older red airplane is going straigzt up

PROBLEM: Sentence: 'a large open kitchen has brown wood cabinets'. Replace the letter 'c' with 'f' in the sentence.

SOLUTION:
a large open kitfhen has brown wood fabinets