TASK DEFINITION: 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.
PROBLEM: Passage: Out of the 355,731 people residing in Bilbao in 2009, only 114,220 (32.1%) were born inside the municipality. Of the remainder, 114,908 were born in other Biscayan towns, while 9,545 were born in the other two Basque provinces; 85,789 came from the rest of Spain (mainly Castile-León and Galicia (Spain)), and 33,537 were foreigners. There are 127 different nationalities registered in Bilbao, although 60 of them represent fewer than 10 people each. The largest foreign communities are Bolivians and Colombians, with 4,879 and 3,730 respectively. Other nationalities with more than 1,000 inhabitants are Romanians (2,248), Moroccos (2,058), Ecuadorians (1,832), Chinese (1,390), Brazilians (1,273) and Paraguayans, with 1,204.
Question: Which foreign groups have between 2000 and 3000 people in Bilbao?

SOLUTION: span

PROBLEM: Passage: On December 23, 1918, Milutinović's troops ended a smaller uprising in Rijeka Crnojevića and stopped an attack by the Greens on Nikšić. The next day, about 250 Serbian troops and 850 volunteers from nearby Montenegrin clans fought a formation of approximately 1,500 to 2,000 rebel Greens in Cetinje. On January 6, 1919, the Greens initiated a siege on Cetinje, killing some members of the Great National Assembly and killing some Whites. After that, the Greens experienced severe factionalism, in addition to facing the militarily stronger Whites.
Question: On what date did 250 Serbian troops and 850 volunteers from nearby Montenegrin clans fight a formation of approximately 1,500 to 2,000 rebel Greens in Cetinje?

SOLUTION: date

PROBLEM: Passage: In England, in the absence of census figures, historians propose a range of preincident population figures from as high as 7 million to as low as 4 million in 1300, and a postincident population figure as low as 2 million. By the end of 1350, the Black Death subsided, but it never really died out in England. Over the next few hundred years, further outbreaks occurred in 1361–1362, 1369, 1379–1383, 1389–1393, and throughout the first half of the 15th century. An outbreak in 1471 took as much as 10–15% of the population, while the death rate of the plague of 1479–1480 could have been as high as 20%. The most general outbreaks in Tudor dynasty and House of Stuart England seem to have begun in 1498, 1535, 1543, 1563, 1589, 1603, 1625, and 1636, and ended with the Great Plague of London in 1665.
Question: How many years after the general outbreaks of the plague in the Tudor dynasty and House of Stuart England began did it end with the Great Plague of London?

SOLUTION:
number