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: 'broccoli and a sweet potato are served on a white plate'. Replace the letter 'o' with 'c' in the sentence.
answer:
brccccli and a sweet pctatc are served cn a white plate

question:
Sentence: 'a man holding glass near a pick up truck on the street'. Replace the letter 'e' with 'w' in the sentence.
answer:
a man holding glass nwar a pick up truck on thw strwwt