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.

Input: Consider Input: Passage: 1st Squadron, 10th Cavalry  with the 4th Infantry Division participated in Exercise Reforger in 1977, 1978, 1981, 1985, 1987, and 1991. Exercise Reforger  was an annual exercise conducted, during the Cold War, by NATO. The exercise was intended to ensure that NATO had the ability to quickly deploy forces to West Germany in the event of a conflict with the Warsaw Pact. 2nd Squadron, 10th Cavalry  with the 7th Infantry Division participated in Exercise Reforger in 1984, 1986 and 1993. 3rd Battalion, 10th Cavalry  was activated in the 1st Cavalry Division at Fort Hood, Texas, in 1977.
Question: What year was the first year the st Squadron, 10th Cavalry with the 4th Infantry Division participated in Exercise Reforger?

Output: date


Input: Consider Input: Passage: The United States Census Bureau estimates that the population of Tennessee was 6,715,984 on July 1, 2017, an increase of 369,689 people since the 2010 United States Census, or 5.8%. This includes a natural increase since the last census of 124,385 people (that is 584,236 births minus 459,851 deaths), and an increase from net migration of 244,537 people into the state. Immigration to the United States from outside the United States resulted in a net increase of 66,412 people, and migration within the country produced a net increase of 178,125 people.
Question: What was the largest increase in the United States in 2017: immigration or migration?

Output: span


Input: Consider Input: Passage: Mexicos Gross Domestic Product (GDP) in purchasing power parity (PPP) was estimated at US $2,143.499 1000000000 (number) in 2014, and $1,261.642 1000000000 (number) in nominal exchange rates. It is the leader of the MINT (economics) group. Its standard of living, as measured in GDP in PPP per capita, was US $16,900. The World Bank reported in 2009 that Mexicos Gross National Income in market exchange rates was the second highest in Latin America, after Brazil at US $1,830.392 billion, which lead to the highest Gross National Income in the region at $14,400. As such, Mexico is now firmly established as an upper middle-income country. After the slowdown of 2001 the country has recovered and has grown 4.2, 3.0 and 4.8 percent in 2004, 2005 and 2006, even though it is considered to be well below Mexicos potential growth.
Question: What year was in the middle for Mexicos growth: 2004, 2005 or 2006?


Output: date