instruction:
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.
question:
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 Dine bikeyah . 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?
answer:
date

question:
Passage: Coming off of their dominant home win over the Steelers, the Ravens flew to Paul Brown Stadium for an AFC North rematch with the Cincinnati Bengals, trying to win the division and a playoff berth on this Thursday Night fight. After a scoreless first quarter, the Ravens trailed early as Bengals kicker Shayne Graham kicked a 23-yard and a 27-yard field goal. In the third quarter, things went from bad to worse for Baltimore as QB Carson Palmer completed a 40-yard flea-flicker TD pass to WR T. J. Houshmandzadeh for the only score of the period. In the fourth quarter, the Ravens valiantly tried to fight back, as QB Steve McNair completed a 36-yard TD pass to WR Derrick Mason. However, a failed onside kick spelled Baltimore's doom. With the loss, the Ravens fell to 9-3.
Question: How many wins did the Ravens have after this game?
answer:
number

question:
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 more touchdowns were scored in the second half compared to the first?
answer:
number