instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a bathroom that has  a sink and a toilet'. Replace the letter 's' with 'a' in the sentence.
answer:
a bathroom that haa  a aink and a toilet


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 traffic light suspended over a street next to a building'. Replace the letter 'u' with 'h' in the sentence.
answer:

a traffic light shspended over a street next to a bhilding