This task involves annotating the answer type to a given question that involve some kind of complex reasoning (including numerical reasoning). Note that the questions require looking at more than one part of the passage to answer. There are 3 possible answer types (i) spans, (ii) numbers and (iii) dates. If the answer can be found in the passage, label it as "span". If the answer is a number, label as "number". Similarly, label "date" if you think the answer to the given question is a date.

Passage: Col. Edwin Sumner conducted a campaign against the Navajo in 1851. He delegated Maj. Electus Backus to build Fort Defiance in the middle of Diné bikéyah . Col Sumner entered Canyon de Chelly but Navajo harassment attacks caused him to withdraw. In 1855 a treaty was signed at Laguna Negra by Manuelito and Zarcillos Largos for the Navajo and Henry L. Dodge , Governor Merriweather, and General John Garland. Two years later a severe drought hit the Navajo and decimated their livestock and agricultural resources, causing a famine in the winter of 1857-1858. A time of social disruption ensued. Surrounding tribes gradually increased their attacks on the weakened Navajo. The Navajo demanded in 1858 that Fort Defiance stop grazing their livestock on prime Navajo land. Soldiers shot 48 cattle and 8 horses belonging to Manuelito. Navajo warriors killed a servant of the commanding officer in retaliation for the killing of their people's livestock without compensation. The United States military demanded the murderer be brought to them, or they would begin a war. The Miles Campaign was sent against them, leaving Fort Defiance on September 9.
Question: What year did a severe drought hit the Navajo?
date

Passage: Trying to make it 5 straight wins and stay in contention for the No.&#160;3 seed in the AFC playoffs, the Chargers continued their domination over the Denver Broncos on Christmas Eve. Not only did they stop them from scoring a touchdown for the second time this season they also made it 4 straight victories over Denver. The game started off inauspiciously for the Broncos when Denver QB Jay Cutler fumbled the ball leading to a 40-yard K Nate Kaeding field goal for San Diego, and after a 3 and out, the Chargers gave the ball to RB LaDainian Tomlinson for a 17-yard TD run. The second quarter was relatively quiet as 2 Kaeding Field goals (23-yards & 29-yards) gave the Bolts a 16-point lead going into halftime. In the third quarter San Diego QB Philip Rivers and WR Chris Chambers hooked up on a 14-yard pass and catch to make the score 23-0. Denver finally began to move offensively until a tipped pass was intercepted by San Diego SS Clinton Hart, but some defensive miscues including a San Diego QB Billy Volek fumble led to a 23-yard field goal by Denver K Jason Elam. In the fourth quarter the defense stepped up for the Bolts on 2 fourth down plays and a San Diego CB Quentin Jammer interception sealed the victory for San Diego. The result guaranteed that a San Diego win at Oakland would secure the No.&#160;3 seed in the AFC playoffs. The win in Denver at home made San Diego only the second team in NFL history to shut out every opponent at home in the first quarter, outscoring opponents 81-0.
Question: How many field goals did Nate Kaeding have?
number

Passage: Another key development in the wake of the Forty Years' War was the emergence of a unified and powerful Arakan. The western littoral between the Arakan Yoma and the Bay of Bengal remained politically fragmented even after Pagan's fall. The coast was divided between at least two power centres at Launggyet in the north and Sandoway  in the south. The weakness became exposed between 1373 and 1429 when the region was first subject first to Avan and then to Peguan interference. Arakan was Pegu's vassal from 1412 at least until Razadarit's death in 1421. The restoration came in 1429 when the last king of Arakan, Saw Mon III, in exile since 1406, came back with an army provided by Sultan Jalaluddin Muhammad Shah of Bengal. Narameikhla again became king, though as a vassal of Bengal. The vassalage was brief. In 1437, Saw Mon's brother Khayi annexed Sandoway and Ramu, his overlord's territory, unifying the Arakan littoral for the first time in history. An ascendant Arakan seized Chittagong in 1459, and received tribute from the Ganges delta.
Question: What year was Khayi's brother exiled?

date