TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'stone and white colored structure in front of white modern building'. Replace the letter 'r' with 'p' in the sentence.

SOLUTION: stone and white coloped stpuctupe in fpont of white modepn building

PROBLEM: Sentence: 'you are never to old to play with the nintendo wii'. Replace the letter 'e' with 'v' in the sentence.

SOLUTION: you arv nvvvr to old to play with thv nintvndo wii

PROBLEM: Sentence: 'a black and white photo of a child standing near a bus'. Replace the letter 'a' with 'p' in the sentence.

SOLUTION:
p blpck pnd white photo of p child stpnding nepr p bus