instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'nine geese flying south for the winter months'. Replace the letter 't' with 'f' in the sentence.
answer:
nine geese flying soufh for fhe winfer monfhs


question:
Sentence: 'a man sitting at a table and using his laptop'. Replace the letter 'd' with 'o' in the sentence.
answer:
a man sitting at a table ano using his laptop


question:
Sentence: 'a lot of street signs downlight with a red light'. Replace the letter 's' with 'z' in the sentence.
answer:

a lot of ztreet zignz downlight with a red light