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

[EX Q]: Sentence: 'an older red airplane is going straight up'. Replace the letter 'h' with 'z' in the sentence.
[EX A]: an older red airplane is going straigzt up

[EX Q]: Sentence: 'a sign sitting on the side of a snow covered slope'. Replace the letter 'e' with 'g' in the sentence.
[EX A]: a sign sitting on thg sidg of a snow covgrgd slopg

[EX Q]: Sentence: 'a brown and black dog is sleeping in a bed and some pillows'. Replace the letter 'w' with 'n' in the sentence.
[EX A]:
a bronn and black dog is sleeping in a bed and some pillons