I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "Luther next set about reversing or modifying the new church practices. By working alongside the authorities to restore public order, he signalled his reinvention as a conservative force within the Reformation. After banishing the Zwickau prophets, he now faced a battle against not only the established Church but also the radical reformers who threatened the new order by fomenting social unrest and violence."? 

From where were the Zwickau prophets banished?