instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a couple of white street signs sitting on top of a pole'. Replace the letter 'n' with 't' in the sentence.
answer:
a couple of white street sigts sittitg ot top of a pole


question:
Sentence: 'little tubs of rice and mixed vegetables for a meal'. Replace the letter 't' with 'z' in the sentence.
answer:
lizzle zubs of rice and mixed vegezables for a meal


question:
Sentence: 'an outdoor view of a dilapidated european restaurant'. Replace the letter 'i' with 'e' in the sentence.
answer:

an outdoor veew of a delapedated european restaurant