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.

Example Input: Passage: Since 1444 Si Jifa had repeatedly sent tribute to Ming asking for pardon to no avail. In March 1449, a combined army of 150,000 soldiers was amassed, and the fourth and final campaign to extirpate the Mong Mao threat was launched under the supervision of Wang Ji. The army quickly marched on Mong Yang, which harbored Si Jifa, and captured their strongholds. However Si Jifa managed to escape yet again, and the campaign ended inconclusively with the ruling Shan elite allowed to remain in Mong Yang so long as they never returned to Mong Mao. Sources disagree as to how Si Jifa met his end. One source claims he died in combat in 1449, another says he was captured by the king of Ava and held captive in exchange for Ming territory, and one Shan chronicle claims he reigned for another fifty years. While Mong Mao had been defeated and pacified, Si Jifa's son Si Hongfa continued to rule in Mong Yang and his successors would eventually go on to invade Ava in 1527. So in practice Si Lunfa's family survived as rulers in the neighboring state of Mong Yang under the close observation of Ming. The fourth campaign was also marred by lack of discipline, inefficient administration, and mismanagement of resources. On the first day of mobilization, the entire 150,000 strong army started marching all at once, and many were trampled to death. Food supplies were mismanaged and assigned to individual carriers disproportionate to their weight, and no proper plan for their distribution existed. Some soldiers committed suicide due to the conditions prevalent in the army. 
Question: How many years passed from when he was sending Ming tribute to when 150,000 soldiers were amassed? 
Answer type: Number 
Example Output: 5.

Example Input: Passage: Trying to snap a five-game losing skid, the Panthers stayed at home for a Week 13 intraconference duel with the San Francisco 49ers. In the first quarter, Carolina pounced first with kicker John Kasay nailing a 19-yard field goal for the only score of the period. In the second quarter, the Panthers increased their lead with QB Vinny Testaverde completing a 5-yard TD pass to rookie TE Dante Rosario, while CB Richard Marshall returned an interception 67 yards for a touchdown. In the third quarter, the 49ers managed to get on the board as QB Trent Dilfer completing a 20-yard TD pass to WR Arnaz Battle and a 1-yard TD pass to TE Delanie Walker. Afterwards, Carolina went back to work as RB DeShaun Foster got a 1-yard TD run. In the fourth quarter, the Panthers pulled away as Testaverde completed a 1-yard TD pass to TE Jeff King. With the win, not only did Carolina improve to 5-7, but it even managed to give the Panthers their first home win of the year. 
Question: How many total combined yards of touchdown passes were made in the game? 
Answer type: Number 
Example Output: 27.

Example Input: Passage: Genghis Khan and his descendants launched numerous invasions of China, subjugating the Western Xia in 1209 before destroying them in 1227, defeating the Jin dynasty in 1234 and defeating the Song dynasty in 1279. They made the Kingdom of Dali into a vassal state in 1253 after the Dali King Duan Xingzhi defected to the Mongols and helped them conquer the rest of Yunnan, forced Korea to capitulate through invasions, but failed in their attempts to invade Japan. 
Question: How many years after subjugating the Western Xia did Genghis Khan and his descendants destroy them? 
Answer type: Number 
Example Output:
18.