Detailed Instructions: This task involves creating answers to complex questions, from a given passage. Answering these questions, typically involve understanding multiple sentences. Make sure that your answer has the same type as the "answer type" mentioned in input. The provided "answer type" can be of any of the following types: "span", "date", "number". A "span" answer is a continuous phrase taken directly from the passage or question. You can directly copy-paste the text from the passage or the question for span type answers. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words. A "number" type answer can include a digit specifying an actual value. For "date" type answers, use DD MM YYYY format e.g. 11 Jan 1992. If full date is not available in the passage you can write partial date such as 1992 or Jan 1992. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words.
Problem:Passage: The outbreak of the Civil War forced pro- and anti-treaty supporters to choose sides. Supporters of the treaty came to be known as "pro-treaty" or Free State Army, legally the National Army, and were often called "Staters" by their opponents. The latter called themselves Republicans and were also known as "anti-treaty" forces, or Irregulars, a term preferred by the Free State side. The Anti-Treaty IRA claimed that it was defending the Irish Republic declared in 1916 during the Easter Rising, confirmed by the First Dail and invalidly set aside by those who accepted the compromise of the Free State. Eamon de Valera stated that he would serve as an ordinary IRA volunteer and left the leadership of the Anti-Treaty Republicans to Liam Lynch, the IRA Chief of Staff. De Valera, though the Republican 'President as of October 1922, had little control over military operations. Military operations were directed by Liam Lynch until he was killed on 10 April 1923 and then by Frank Aiken, as of 20 April 1923.
Question: How many different names were the supporters of the treaty known by?
Answer type: Number
Solution:
4.