Where does a worker work?
A worker works in a factory.
What does she do?
She's a nurse.
Where does a doctor work?
A doctor works in a hospital.
What does he do?
He's a farmer?
Where does a clerk work?
A clerk works in an office.
What does he do?
He's a worker.
What does he do?
He's a taxi driver.
Where does a farmer work?
A farmer works in a field.