instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'stone and white colored structure in front of white modern building'. Replace the letter 'r' with 'p' in the sentence.
answer:
stone and white coloped stpuctupe in fpont of white modepn building


question:
Sentence: 'a woman walks by with a large suitcase and a polka dot umbrella'. Replace the letter 'e' with 'n' in the sentence.
answer:
a woman walks by with a largn suitcasn and a polka dot umbrnlla


question:
Sentence: 'two stop lights, both red, on a pine street'. Replace the letter 'r' with 'x' in the sentence.
answer:

two stop lights, both xed, on a pine stxeet