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: Income inequality has become a hotly debated topic globally. According to the CIA World Factbook, U.S. income inequality ranked 41st highest among 156 countries in 2017 (i.e., 74% of countries have a more equal income distribution). According to the Congressional Budget Office, the top 1% of income households earned about a 9% share of the pre-tax income in 1979, versus 19% in 2007 and 17% in 2014. For after-tax income, these figures were 7%, 17%, and 13%, respectively. These figures indicate the share of income earned by top earners more than doubled between 1979 and 2007, then fell somewhat following the Great Recession, and the higher tax rates and re-distributive policies applied by President Barack Obama in 2013 (i.e., expiration of the Bush Tax Cuts for the top 1% and subsidies for lower income persons via the Affordable Care Act). Recasting the 2012 income using the 1979 income distribution (representing the more egalitarian 1950-1980 period), the bottom 99% of families would have averaged about $7,100 more income. Income inequality in the United States has grown from 2005 to 2012 in more than 2 out of 3 metropolitan areas.
Question: Which year saw the top 1% earn the most share of the pre-tax income, 1979, 2007, or 2014?

SOLUTION: date

PROBLEM: Passage: The bidding date, originally December 20, 1961, was postponed to January 22, 1962, to clarify the details of the arch construction. About 50 companies that had requested the construction requirements received bidding invitations. Extending from $11,923,163 to $12,765,078, all four bids exceeded the engineer estimate of $8,067,000. Wirth had a committee led by George B. Hartzog Jr. determine the validity of the bids in light of the governments conditions. Following a meeting with the bidders, the committee affirmed the bids reasonableness, and Wirth awarded the lowest bidder, MacDonald Construction Co. of St. Louis, the contract for the construction of the arch and the visitor center. On March 14, 1962, he signed the contract and received from Tucker $2,500,000, the citys subsidy for the phase. MacDonald reduced its bid $500,000 to $11,442,418. The Pittsburgh-Des Moines Steel Company served as the subcontractor for the shell of the arch.
Question: How many days was the bidding postponed?

SOLUTION: number

PROBLEM: Passage: Minority ethnic groups include White people in Zimbabwe, who make up less than 1% of the total population. White Zimbabweans are mostly of British origin, but there are also Afrikaner, Greeks in Zimbabwe, Portuguese people, Franco-Mauritian and Dutch people communities. The white population dropped from a peak of around 278,000 or 4.3% of the population in 1975 to possibly 120,000 in 1999, and was estimated to be no more than 50,000 in 2002, and possibly much less. The 2012 census lists the total white population at 28,782 (roughly 0.22% of the population), one-tenth of its 1975 estimated size. Most emigration has been to the United Kingdom (between Zimbabweans in the United Kingdom Britons are of Rhodesian or Zimbabwean origin), South Africa, Botswana, Zambia, Canada, Australia and New Zealand. Coloureds form 0.5% of the population, and various Asian people ethnic groups, mostly of Indian and Chinese origin, are also 0.5%.
Question: Was the White population estimated to be higher in 1975 or 1999?

SOLUTION:
date