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.

[Q]: Passage: The Kiev uprising of 1068 was a revolt against Grand Prince Iziaslav Yaroslavich of Kiev in the aftermath of a Kievan Rus' defeat at the hands of the Cumans at Battle of the Alta River near the city of Pereiaslavl, southeast of Kiev. The Polovtsy raid of 1068-1069 was only the tribe's second major raid into Rus'  in 1055, but the tribesmen broke the treaty and attacked Kievan Rus' six years later, defeating Vsevolod in battle).  In 1068-1069, the Polovtsy penetrated the earthwork defensive lines built up over the years by Prince Vladimir Svyatoslavich  and his son, Yaroslav the Wise .  They were met by a combined army of Yaroslav's sons: Grand Prince Iziaslav of Kiev and his brothers, Princes Sviatoslav Yaroslavich of Chernigov, and Vsevolod, which was defeated and fled back to Kiev in disarray. The Polovsty continued to raid throughout the area, prompting the Kievans to call on the grand prince to rearm them so they could march out and meet the threat.  Iziaslav refused, prompting the rebellion.  The Tale of Bygone Years , a part of The Lavrentian Chronicle, relates what happened next:
Question: How many years did the Polovtsy raid last?
[A]: number


[Q]: Passage: The February Revolution had toppled Tsar Nicolas II of Russia, and replaced his government with the Russian Provisional Government. However, the provisional government was weak and riven by internal dissension. It continued to wage World War I, which became increasingly unpopular. A nationwide crisis developed in Russia, affecting social, economic, and political relations. Disorder in industry and transport had intensified, and difficulties in obtaining provisions had increased. Gross industrial production in 1917 had decreased by over 36% from what it had been in 1914. In the autumn, as much as 50% of all enterprises were closed down in the Urals, the Donbas, and other industrial centers, leading to mass unemployment. At the same time, the cost of living increased sharply. Real wages fell about 50% from what they had been in 1913. Russia's national debt in October 1917 had risen to 50 billion rubles. Of this, debts to foreign governments constituted more than 11 billion rubles. The country faced the threat of financial bankruptcy.
Question: When did the February Revolution occur?
[A]: date


[Q]: Passage: Coming off their bye week, the Ravens went home for a Week 8 duel with the undefeated Denver Broncos.  Baltimore took flight in the first half with kicker Steven Hauschka nailing a 43-yard field goal in the first quarter and a 35-yard field goal in the second quarter.  The Ravens would immediately make their domination felt in the third quarter as rookie cornerback Lardarius Webb returned the second half's opening kickoff 95 yards for a touchdown.  The Broncos would get on the board with running back Knowshon Moreno getting a 1-yard touchdown run, yet Baltimore answered with Hauschka booting a 31-yard field goal.  Afterwards, the Ravens closed the game out in the fourth quarter as quarterback Joe Flacco found wide receiver Derrick Mason on a 20-yard touchdown pass, while running back Ray Rice got a 7-yard touchdown run.
Question: How many more times did the Ravens score in the second half than they did in the first half?
[A]:
number