instruction:
This task involves creating questions from a given passage that involve some kind of complex reasoning (including numerical reasoning). 
The generated questions must require looking at more than one part of the passage to answer. Try to use a variety of reasoning types in your questions (some of the sample reasoning types are illustrated in the 'positive examples' field) and also have a variety of answer types (spans, numbers, dates). A span is a continuous phrase taken directly from the passage or question. In such questions, the answer spans are recommended to be five words. Questions with answer type "number", are expected to start with "How many". For instance, "How long did an event last?" can be phrased as "How many years did an event last?". To increase diversity, try to create more questions for which the answer will be multiple spans. Please create questions that require AT LEAST 2 arithmetic operations as illustrated in the 'positive examples' field. You are encouraged to try DIFFERENT COMBINATIONS of operations and not just limit to the combinations shown in those examples. The more challenging questions you create, the better it is.
question:
Passage: After the political changes, in 1991, Bulgaria had a US$11.25 billion state debt, which represented 180% of the GDP. The state debt peaked in 1994, when it reached US$14.4 billion. During 1998-2008 Bulgaria maintained policy of Government budget balance, which reduced the state debt to 5.07 billion euro. Combined with the economic growth in that period, the state debt dropped to a record low of 13.7% of GDP, one of the lowest in the European Union. In 2008 Bulgaria also maintained 4.286 billion euro fiscal reserve, meaning that net state debt at this moment was only 0.784 billion euro. After the Financial crisis of 2007–08 Bulgaria turned to policy of Deficit spending and at the end of 2013 the state debt rose up to 7.219 billion euro, representing 18.1% of the GDP. In 2015, the debt rate increased further to 26.7% of the GDP, still remaining the third lowest in EU after Estonia and Luxembourg. Part of the increase was driven by the collapse of Corporate Commercial Bank in 2014, the fourth largest bank in the country, and the subsequent paying out of Deposit insurance.
answer:
For how many years did Bulgaria maintain a policy of a balanced budget?


question:
Passage: The Steelers' last game in the 3-game home stand was against the Browns.  Landry Jones started the game but left due to injury and was replaced by Ben Roethlisberger.  In the first quarter, the Steelers grabbed an early lead as Chris Boswell nailed a 24-yard field goal for a 3-0 lead.  The Browns tied it up however at 3-3 when Travis Coons kicked a 23-yard field goal.  The Steelers would retake the lead later on in the quarter when Boswell nailed a 34-yard field goal for a 6-3 game.  In the second quarter, it was all Steelers when Roethlisberger found Antonio Brown on a 4-yard pass (with a successful 2-point conversion) for a 14-3 lead followed up by Roethlisberger finding Martavis Bryant on a 32-yard pass for a 21-3 lead at halftime.  In the third quarter, the Steelers went back to work as Boswell kicked a 25-yard field goal for a 24-3 game for the only score of the period.  In the fourth quarter, Johnny Manziel found Gary Barnidge on a 7-yard pass (with a failed PAT) for a 24-9 game.  The Steelers later on would wrap the game up when Roethlisberger and Brown hooked up again this time on a 56-yard pass (with a failed PAT) for the final score of 30-9. With the win, the Steelers head into their bye week at 6-4, and finally won a game within their division while also winning consecutive conference games for the first time in the season.  The team also improves to 3-2 when Ben doesn't start and also finishes 2-1 in the 3-game home stand. The defense also stood out by sacking Manziel 6 times and got 3 turnovers.
answer:
How many field goals were kicked in the first quarter?


question:
Passage: Švitrigaila was losing his influence in the Slavic principalities and could no longer resist Poland and Sigismund. On 4 September 1437 he attempted to reconcile with Poland: he would rule the lands that still backed him , and after his death these territories would pass to the King of Poland. However, under strong protest from Sigismund, the Polish Senate declined to ratify the treaty . In 1438 Švitrigaila withdrew to Moldavia. The reign of Sigismund Kęstutaitis was brief — he was assassinated in 1440. Švitrigaila returned from exile in 1442 and ruled Lutsk until his death a decade later. Jogaila's son Casimir IV Jagiellon, born in 1426, received approval as a hereditary hospodar from Lithuania's ruling families in 1440. This event is seen by the historians Jerzy Lukowski and Hubert Zawadzki as marking the end of the succession dispute.
answer:

How many years did Švitrigaila withdrew to Moldavia before returned from exile and ruled Lutsk?