instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a pair of planes in an airport lot parked for boarding and exiting'. Replace the letter 'e' with 'o' in the sentence.
answer:
a pair of planos in an airport lot parkod for boarding and oxiting


question:
Sentence: 'there is a stepladder situated over a toilet'. Replace the letter 'r' with 'x' in the sentence.
answer:
thexe is a stepladdex situated ovex a toilet


question:
Sentence: 'a small kitten is playing with the tv set'. Replace the letter 'y' with 'z' in the sentence.
answer:

a small kitten is plazing with the tv set