instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a fire hydrant and a rolled up fire hose'. Replace the letter 'd' with 's' in the sentence.
answer:
a fire hysrant ans a rolles up fire hose


question:
Sentence: 'a white stove top oven sitting in a kitchen'. Replace the letter 'k' with 'b' in the sentence.
answer:
a white stove top oven sitting in a bitchen


question:
Sentence: 'a big building with a clock in the top of it'. Replace the letter 't' with 'z' in the sentence.
answer:

a big building wizh a clock in zhe zop of iz