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: Antananarivo has been the largest city on the island since at least the late 18th century, when its population was estimated at 15,000. By 1810, the population had grown to 80,000 before declining dramatically between 1829 and 1842 during the reigns of Radama I and especially Ranavalona I. Because of a combination of war, forced labor, disease and harsh measures of justice, the population of Imerina fell from 750,000 to 130,000 during this period. In the final years of the Kingdom of Imerina, the population had recovered to between 50,000 and 75,000; most of the population were slaves who were largely captured in provincial military campaigns. In 1950, Antananarivos population was around 175,000. By the late 1990s the population of the metropolitan area had reached 1.4 million, and – while the city itself now has a population (2013) of about 1,300,000 – with suburbs lying outside the city limits it had grown to almost 2.1 million in 2013. The metropolitan area is thus home to 10 percent of the islands residents. Rural migration to the capital propels this growth; the citys population exceeds that of the other five provincial capitals combined.
Question: How many percent of the island's population lives outside the metropolitan area of Antananarivo?

A: number
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Q: Passage: Composers using electric bass include Christian Wolff (composer) (Electric Spring 1, 1966; Electric Spring 2, 1966/70; Electric Spring 3, 1967; and Untitled, 1996); Francis Thorne (Liebesrock 1968-69); Krzysztof Penderecki (Cello Concerto no. 1, 1966/67, rev. 1971/72; Capriccio for Violin and Orchestra (Penderecki), 1967); The Devils of Loudun (opera), 1969; Kosmogonia, 1970; and Partita (Penderecki), 1971); Louis Andriessen (Spektakel, 1970; De Staat, 1972-1976; Hoketus, 1976; De Tijd, 1980-81; and De Materie, 1984-1988); Pelle Gudmundsen-Holmgreen (Symfoni på Rygmarven, 1966; Rerepriser, 1967; and Piece by Piece, 1968); and Irwin Bazelon (Churchill Downs, 1970).
Question: Who was a composer first using an electric bass first: Thorne or Tijd?

A: span
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Q: Passage: In 1749, Britain and France agreed to keep the island neutral, but Britain took control after 1763, prompting France to capture the island in 1781, then Britain to recapture the island in 1793.  The population in 1771 was 5,084, of which only 243 were white and 4,716 were slaves.  In 1791 the population was 15,020, of which 541 were white and 14,170 were slaves.  There were then 37 sugar factories, 99 cotton factories, and 4 coffee factories.  After nutmeg was discovered in 1768, 40 nutmeg plantations were started.  The island became a British acquisition for good in 1802, with a ratified treaty in 1814.
Question: Which group was bigger, white or slaves?

A:
span
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