instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'this is a cute dog sticking his head out of the window of a red car'. Replace the letter 'e' with 'z' in the sentence.
answer:
this is a cutz dog sticking his hzad out of thz window of a rzd car


question:
Sentence: 'a geoup of people on bicycles coming down a street'. Replace the letter 'i' with 'x' in the sentence.
answer:
a geoup of people on bxcycles comxng down a street


question:
Sentence: 'the person is enjoying food and some cups with drinks'. Replace the letter 'n' with 'i' in the sentence.
answer:

the persoi is eijoyiig food aid some cups with driiks