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: In January 1454, the year that Casimir IV was married to Elisabeth Habsburg, the Prussian faction asked Casimir IV and protection by the Kingdom of Poland. Casimir asked the Prussian Confederation for a more formal petition. On 4 February 1454, the Secret Council of the Prussian Confederation sent a formal act of disobedience to the Grand Master. Two days later the confederacy started its rebellion and soon almost all Prussia, except for Marienburg, Stuhm , and Konitz , were free from Teutonic rule. Most of the captured Ordensburg castles were immediately destroyed. On 10 February 1454, the confederacy sent an official delegation to Poland, headed by Johannes von Baysen. By 20 February, the delegates were in Kraków and asked Casimir to bring Prussia into the Polish kingdom. After negotiating the exact conditions of incorporation, the king agreed and delegates of the Prussian Confederation pledged allegiance to Casimir on 6 March 1454. On the same day, the king agreed to all the conditions of the Prussian delegates — for instance Thorn demanded the destruction of the Polish city of Nieszawa — giving wide privileges to the Prussian cities and nobility. Three days later, Johannes von Baysen was named as the first governor of Prussia. After 15 April, most of the Prussian estates, with the exception of the Prince-Bishopric of Warmia, pledged allegiance to their new ruler. Poland sent the Grand Master a declaration of war, predated to 22 February. Both sides expected the war to end quickly.
Question: On what date did the confederacy start it's rebellion where soon after almost all Prussia was free from Teutonic rule?

SOLUTION: date

PROBLEM: Passage: The government of Portuguese India started in 1505, six years after the discovery of the sea route to India by Vasco da Gama, with the nomination of the first Viceroy Francisco de Almeida, then settled at Kochi. Until 1752, the name "India" included all Portuguese possessions in the Indian Ocean, from southern Africa to Southeast Asia, governed - either by a Viceroy or Governor - from its headquarters, established in Goa since 1510. In 1752 Portuguese Mozambique got its own government and in 1844 the Portuguese Government of India stopped administering the territory of Portuguese Macau, Solor and Portuguese Timor, seeing itself thus confined to a reduced territorial entity in Malabar: Goa, Daman, Diu, Dadra and Nagar Haveli. Portuguese control ceased in the last two enclaves in 1954, and finally ceased in the remaining three pockets in 1961, when they were occupied by the Republic of India . This ended four and a half centuries of Portuguese rule in parts—thought tiny—of India. It may be noted that during the term of the monarchy, the title of the head of the Portuguese government in India ranged from "Governor" to "Viceroy". The title of viceroy would only be assigned to members of the nobility; It was formally terminated in 1774, although it has later been given sporadically to be decisively ended after 1835), as shown below.
Question: What year was the discovery of the sea route to India by Vasco da Gama?

SOLUTION: date

PROBLEM: Passage: This drop was caused by a combination of sharply lower petroleum prices in world markets and voluntary production cuts in Brunei. The GDP recovered somewhat since 1986, growing by 12% in 1987, 1% in 1988, and 9% in 1989. In recent years, GDP growth was 3.5% in 1996, 4.0% in 1997, 1.0% in 1998, and an estimated 2.5% in 1999. However, the 1999 GDP was still only about $4.5 billion, well below the 1980 peak.
Question: Which year had the largest increase in Petroleum prices, 1997 or 1996?

SOLUTION:
date