instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a herd of cattle standing on a lush green field'. Replace the letter 'g' with 'f' in the sentence.
answer:
a herd of cattle standinf on a lush freen field


question:
Sentence: 'a plate with some meat, potatoes, carrots and some corn'. Replace the letter 'e' with 'q' in the sentence.
answer:
a platq with somq mqat, potatoqs, carrots and somq corn


question:
Sentence: 'the biker is riding down the street wearing a helmet'. Replace the letter 's' with 'd' in the sentence.
answer:

the biker id riding down the dtreet wearing a helmet