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: Still searching for their first win of the season, the Bengals went home for a Week 7 AFC North duel with the Pittsburgh Steelers.  With Carson Palmer still out with a sore elbow, QB Ryan Fitzpatrick was given the start. In the first quarter, Cincinnati trailed early as Steelers QB Ben Roethlisberger completed a 2-yard TD pass to RB Mewelde Moore, along with kicker Jeff Reed getting a 21-yard field goal.  In the second quarter, the Bengals answered with Fitzpatrick completing a 5-yard TD pass to WR Chad Ocho Cinco.  In the third quarter, Pittsburgh responded with Moore getting a 13-yard TD run.  Cincinnati would respond with kicker Dave Rayner nailing a 26-yard field goal.  However, in the fourth quarter, the Steelers pulled away with Roethlisberger completing a 50-yard TD pass to WR Nate Washington, Moore getting a 2-yard TD run, and QB Byron Leftwich completing a 16-yard TD pass to WR Hines Ward.  Earlier in the game, Ward destroyed Bengals linebacker Keith Rivers with a vicious legal hit, breaking Rivers' jaw. With the loss, Cincinnati dropped to 0-7.  The team's first such start since 2002.
Question: how many yards did Roethlisberger complete?

SOLUTION: number

PROBLEM: Passage: Since the end of World War II, in part due to industrial size and the onset of the Cold War, the United States has often been a proponent of reduced tariff-barriers and free trade. The U.S. helped establish the General Agreement on Tariffs and Trade  and later the World Trade Organization ; although it had rejected an earlier version in the 1950s . Since the 1970s, U.S. governments have negotiated managed-trade agreements, such as the North American Free Trade Agreement  in the 1990s, the Dominican Republic-Central America Free Trade Agreement  in 2006, and a number of bilateral agreements . In Europe, six countries formed the European Coal and Steel Community  in 1951 which became the European Economic Community  in 1958. Two core objectives of the EEC were the development of a common market, subsequently renamed the single market, and establishing a customs union between its member states. After expanding its membership, the EEC became the European Union  in 1993. The European Union, now the world's largest single market, has concluded free trade agreements with many countries around the world.
Question: When did the countries that later formed the European Union first join?

SOLUTION: 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 its rebellion after the formal act of disobedience was sent to the Grand Master?

SOLUTION:
date