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.

Input: Consider Input: Passage: The size of the indemnity had been the hardest factor to accept for the Tibetan negotiators. The Secretary of State for India, St John Brodrick, had in fact expressed the need for it to be "within the power of the Tibetans to pay" and given Younghusband a free hand to be "guided by circumstances in this matter". Younghusband raised the indemnity demanded from 5,900,000 to 7,500,000 rupees, and further demanded the right for a British trade agent, based at Gyantse, to visit Lhasa "for consultations". It seems that he was still following Lord Curzon's geo-political agenda to extend British influence in Tibet by securing the Chumbi Valley for Britain. Younghusband wanted the payment to be met by yearly instalments; it would have taken about 75 years for the Tibetans to clear their debt, and since British occupation of the Chumbi valley was surety until payment was completed, the valley would remain in British hands. Younghusband wrote to his wife immediately after the signing; "I have got Chumbi for 75 years. I have got Russia out for ever". The regent commented that "When one has known the scorpion the frog is divine". The Amban later publicly repudiated the treaty, while Britain announced that it still accepted Chinese claims of authority over Tibet. Acting Viceroy Lord Ampthill reduced the indemnity by two-thirds and considerably eased the terms in other ways. The provisions of this 1904 treaty were revised in the Anglo-Chinese Convention of 1906. The British, for a fee from the Qing court, also agreed "not to annex Tibetan territory or to interfere in the administration of Tibet", while China engaged "not to permit any other foreign state to interfere with the territory or internal administration of Tibet".
Question: How many years were between the 1904 treaty and its revision?
Answer type: Number

Output: 2.

Input: Consider Input: Passage: From the Act of Union on 1 January 1801, until 6 December 1922, the island of Ireland was part of the United Kingdom of Great Britain and Ireland. During the Great Famine, from 1845 to 1849, the island's population of over 8 million fell by 30%. One million Irish died of starvation and/or disease and another 1.5 million emigrated, mostly to the United States. This set the pattern of emigration for the century to come, resulting in a constant population decline up to the 1960s.
Question: How many years did the Irish Great Famine last?
Answer type: Number

Output: 4.

Input: Consider Input: Passage: Trying to snap a four-game losing streak, the Raiders flew to Invesco Field at Mile High for a Week 12 AFC West rematch with the Denver Broncos. After a scoreless first quarter, Oakland drew first blood with kicker Sebastian Janikowski getting a 26-yard field goal. The Broncos would respond with kicker Matt Prater getting a 44-yard field goal. The Raiders would close out the half as WR Johnnie Lee Higgins returned a punt 89 yards for a touchdown. In the third quarter, Denver tied the game with FB Peyton Hillis getting a 6-yard TD run. Oakland would reply with rookie RB Darren McFadden getting a 1-yard TD run. In the fourth quarter, the Raiders pulled away as QB JaMarcus Russell completed a 4-yard TD pass to former Broncos WR Ashley Lelie, while McFadden got another 1-yard TD run.
Question: How many 1-yard touchdowns did Darren McFadden have?
Answer type: Number
Output: 2.