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: Watson is the only golfer to score a round of 67 or less in all 4 majors at least once in 4 different decades. His best round in the Masters is a 67. His first 67 came in 1977. Other 67s were scored in the 1980s, 1990s and 2010s. His most recent 67 at Augusta was his opening round in 2010. His US Open low score is a 65. He scored 65 in 1987 and 2003, 66 in 1993 and he first shot 67 in 1975. At the British Open, Watsons low score is a 64 in 1980. 65s were scored in 1977 (twice), 1994 and 2009 (all 65s at the Open were scored at Turnberry). Finally at the PGA Championship, Watsons low score of the 1970s was a 66 in 1979. In the 1980s he scored a 67 in 1980, 1983, 1985, and 1989. His low PGA score is a 65 in 1993 & 2000.

Answer: How many years in the 1980s did Watson score 67 in golf?

Question: Passage: In the 1840s Nicholas I of Russia reduced 64,000 szlachta to commoner status. Despite this, 62.8% of Russias nobles were szlachta in 1858 and still 46.1% in 1897. Serfdom was abolished in Russian Poland on February 19, 1864. It was deliberately enacted in a way that would ruin the szlachta. It was the only area where peasants paid the market price in redemption for the land (the average for the empire was 34% above the market price). All land taken from Polish peasants since 1846 was to be returned without redemption payments. The ex-serfs could only sell land to other peasants, not szlachta. 90% of the ex-serfs in the empire who actually gained land after 1861 were in the 8 western provinces. Along with Romania, Polish landless or domestic serfs were the only ones to be given land after serfdom was abolished. All this was to punish the szlachtas role in the uprisings of 1830 and 1863. By 1864 80% of szlachta were declasse (downward social mobility), petty nobles were worse off than the average serf, 48.9% of land in Russian Poland was in peasant hands, nobles still held 46%. In the Second Polish Republic the privileges of the nobility were lawfully abolished by the March Constitution (Poland) in 1921 and as such not granted by any future Poland law.

Answer: By how many percent did szlachtas decrease from 1858 to 1897?

Question: Passage: Saint George's Night Uprising in 1343-1345 was an unsuccessful attempt by the indigenous Estonian population in the Duchy of Estonia, the Bishopric of Osel-Wiek, and the insular territories of the State of the Teutonic Order to rid themselves of the Danish and German rulers and landlords, who had conquered the country in the 13th century during the Livonian crusade, and to eradicate the non-indigenous Christian religion. After initial success the revolt was ended by the invasion of the Teutonic Order. In 1346 the Duchy of Estonia was sold for 19,000 Koln marks by the King of Denmark to the Teutonic Order. The shift of sovereignty from Denmark to the State of the Teutonic Order took place on November 1, 1346.

Answer:
How many years after teh Saint George's Night Uprising ended unsuccessfully was the Duchy of Estonia sold for 19,000 Koln marks by the King of Denmark to the Teutonic Order?