instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a couple giraffes walking through a fielded area'. Replace the letter 'e' with 'c' in the sentence.
answer:
a couplc giraffcs walking through a ficldcd arca


question:
Sentence: 'a group of men sitting at a desk with lap top computers'. Replace the letter 'p' with 'z' in the sentence.
answer:
a grouz of men sitting at a desk with laz toz comzuters


question:
Sentence: 'a man with an apron and a hat on looking at food in an oven'. Replace the letter 'g' with 'r' in the sentence.
answer:

a man with an apron and a hat on lookinr at food in an oven