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: Trying to rebound from their road loss to the Eagles, the Lions went home for an NFC North duel with the defending NFC champion Chicago Bears. In the first quarter, Detroit drew first blood with kicker Jason Hanson nailing a 49-yard field goal for the only score of the period.  However, in the second quarter, the Bears took the lead with QB Brian Griese (Rex Grossman was benched prior to the game) completing a 15-yard TD pass to WR Muhsin Muhammad for the only score of the period.  In the third quarter, Chicago increased its lead with kicker Robbie Gould getting a 49-yard and a 41-yard field goal. Afterwards, a high-flying fourth quarter began with QB Jon Kitna completing a 4-yard TD pass to WR Shaun McDonald, along with DB Keith Smith returning an interception 64 yards for a touchdown, giving the Lions the lead.  However, the Bears regained the lead with WR/KR/PR Devin Hester returning a kickoff 97 yards for a touchdown.  Fortunately, Detroit retook the lead with Kitna completing a 15-yard TD pass to WR Troy Edwards, along with RB Kevin Jones getting a 5-yard TD pass.  Chicago would get close with Griese completing a 1-yard TD pass to WR Bernard Berrian.  Afterwards, the Lions sealed their impressive victory with TE Casey Fitzsimmons returning an onside kick 41 yards for a touchdown. The Lions' 34 points would be the most fourth quarter points in NFL history. There was a combined total of 48 points in the fourth quarter, also an NFL record.
answer:
How many 49 yard field goals were made?


question:
Passage: As of the census of 2010, there were 50,251 people, 20,065 households, and 13,721 families residing in the county.  The population density was 90 people per square mile (35/km2). There were 22,677 housing units at an average density of 40 per square mile (15/km2). The racial makeup of the county was 74.1% Race (United States Census), 19.3% Race (United States Census) or Race (United States Census), 0.7% Race (United States Census), 1.1% Race (United States Census), 0.1% Race (United States Census), 1.8% from Race (United States Census), and 3.0% from two or more races. 5.6% of the population were Race (United States Census) or Race (United States Census) of any race.
answer:
How many households and families are in the county according to the 2010 census?


question:
Passage: The Bechers had their first gallery exhibition in 1963 at the Galerie Ruth Nohl in Siegen. Their work became better known in the United States with the publication of their book Anonyme Skulpturen (Anonymous Sculptures) in 1970. The Bechers were shown at the George Eastman House and in solo exhibitions at Sonnabend Gallery, New York, in 1972. In 1974, the Institute of Contemporary Arts, London, organized an exhibition of their work, which toured the United Kingdom. The couple was invited to participate in Documenta 5, 6, 7, and 11 in Kassel in 1972, 1977, 1982 and 2002, and at the Bienal de São Paulo in 1977. The Van Abbemuseum, Eindhoven, organized a retrospective of the artists’ work in 1981. In 1985 the artists had a major museum exhibition, which traveled to the Museum Folkwang, Essen, Musée d’Art Moderne de la Ville de Paris, and Musée d’Art Moderne de la Ville de Liège, Belgium. In 1991 the artists won the Leone d’Oro award for sculpture at the Venice Biennale. The Venice installation was reworked later in 1991, in a retrospective exhibition at the Kölnischer Kunstverein, Cologne. The Typologies installation was exhibited in 1994 at the Ydessa Hendeles Art Foundation, Toronto, and at the Westphalian State Museum of Art and Cultural History in Münster. Other retrospectives of the couple’s work have been organized by the Photographische Sammlung/SK Stiftung Kulture in Cologne (1999 and 2003), Centre Georges Pompidou in Paris (2005) and Museum of Modern Art in New York (2008).
answer:

How many years was the couple invited to participate in Documenta?