Instructions: In this task, you're given a passage, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both passage and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the passage or linked information.
Input: Passage: After the execution of the King, a republic was declared, known as the "Commonwealth of England". The "Rump Parliament" exercised both executive and legislative powers, with a smaller Council of State also having some executive functions. Cromwell remained a member of the "Rump" and was appointed a member of the Council. In the early months after the execution of Charles I, Cromwell tried but failed to unite the original "Royal Independents" led by St John and Saye and Sele, which had fractured during 1648. Cromwell had been connected to this group since before the outbreak of civil war in 1642 and had been closely associated with them during the 1640s. However, only St John was persuaded to retain his seat in Parliament. The Royalists, meanwhile, had regrouped in Ireland, having signed a treaty with the Irish known as "Confederate Catholics". In March, Cromwell was chosen by the Rump to command a campaign against them. Preparations for an invasion of Ireland occupied Cromwell in the subsequent months. In the latter part of the 1640s, Cromwell came across political dissidence in the "New Model Army". The "Leveller" or "Agitator" movement was a political movement that emphasised popular sovereignty, extended suffrage, equality before the law, and religious tolerance. These sentiments were expressed in the manifesto "Agreement of the People" in 1647. Cromwell and the rest of the "Grandees" disagreed with these sentiments in that they gave too much freedom to the people; they believed that the vote should only extend to the landowners. In the "Putney Debates" of 1647, the two groups debated these topics in hopes of forming a new constitution for England. There were rebellions and mutinies following the debates, and in 1649, the Bishopsgate mutiny resulted in the execution of Leveller Robert Lockyer by firing squad. The next month, the Banbury mutiny occurred with similar results. Cromwell led the charge in quelling these rebellions. After quelling Leveller mutinies within the English army at Andover and Burford in May, Cromwell departed for Ireland from Bristol at the end of July.
Link Information: The Commonwealth was the political structure during the period from 1649 to 1660 Answer: 11
Output:
How many years did the Commonwealth of England exist?