instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a group of people hanging around holding umbrellas'. Replace the letter 'p' with 'f' in the sentence.
answer:
a grouf of feofle hanging around holding umbrellas


question:
Sentence: 'two zebras are snuggling at the zoo in their display area'. Replace the letter 'e' with 'z' in the sentence.
answer:
two zzbras arz snuggling at thz zoo in thzir display arza


question:
Sentence: 'a stainless steel and black toaster oven on a counter'. Replace the letter 'n' with 'v' in the sentence.
answer:

a staivless steel avd black toaster ovev ov a couvter