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: Mahmud Barzanji revolts were a series of armed uprisings by Kurdish Sheykh Mahmud Barzanji against the Iraqi authority in newly conquered British Mesopotamia and later the British Mandate in Iraq. Following his first insurrection in May 1919, Sheykh Mahmud was imprisoned and eventually exiled to India for a one-year period. When returning, he was once again appointed a governor, but shortly revolted again declaring himself as the ruler of the Kingdom of Kurdistan. The Kingdom of Kurdistan lasted from September 1922 - July 1924. With British forces greatly exceeding his in ammunition and training, the defeat finally subdued the region to central British Iraqi rule in 1924. Sheykh Mahmud retreated into mountains, and eventually reached terms with the independent Kingdom of Iraq in 1932, over his return from the underground. Sheykh Mahmud revolts are considered the first chapter of the modern Iraqi-Kurdish conflict.
Question: How many months did the Kingdom of Kurdistan last?
Answer type: Number
Solution:
22.