Q: 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.
Passage: In 1905, the Qing sent Zhao Erfeng to Tibet to retaliate against rebellions. By 1908, Zhao was appointed imperial resident in Lhasa. Zhao was beheaded in December 1911 by pro-Republican forces. The bulk of the area that was historically known as Kham was now claimed to be the Xikang Administrative District, created by the Republican revolutionaries. By the end of 1912, the last Manchu troops were forced out of Tibet through India. Thubten Gyatso, the 13th Dalai Lama, returned to Tibet in January 1913 from Sikkim, where he had been residing. When the new ROC government apologised for the actions of the Qing and offered to restore the Dalai Lama to his former position, he replied that he was not interested in Chinese ranks, that Tibet had never been subordinated to China, that Tibet was an independent country, and that he was assuming the spiritual and political leadership of Tibet. Because of this, many have read this reply as a formal declaration of independence. The Chinese side ignored the response, and Tibet had thirty years free of interference from China.
Question: How many years after going to Yibet was Zhao appointed imperial resident?
Answer type: Number
A:
3.