In this task, you are given a set of context paragraphs, some supporting facts and an answer of a question. Your task is to generate question for given answer based on set of context paragraphs, supporting facts and an answer.
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Question: Context_1 : Days of Wonder is a board game publisher owned by Asmodee Group since 2014. Founded in 2002, Days of Wonder distributes its games to 25 countries. It specialises in German-style board games and have branched out to include some online games. Days of Wonder has published games in English, French, German, Spanish, Italian, Dutch, Hungarian, Finnish, Polish, Danish, Czech, Swedish, Norwegian, Korean, Japanese, Portuguese, Russian, Greek. Days of Wonder was co-founded by Eric Hautemont, Pierre Gaubil, Mark Kaufman & Yann Corno. Under the guidance of the company's Creative Director, Cyrille Daujean, the company quickly made a name for itself as a publisher of board games with top notch components and gorgeous designs. Context_2 : Word board games are those games played on a board as players of the game attempt to construct words that use a scoring system. The player with the highest score wins the game. Many if not most board games are also available as software programs and online. Online word board games can be organized so that the player is playing against other people or the game can be played against an automated program acting as an artificial intelligence. Players of some word board games organize themselves into associations, clubs, and tournaments. Context_3 : Francis Tresham is a United Kingdom-based board game designer who has been producing board games since the early 1970s. Tresham founded and ran games company Hartland Trefoil (founded 1971), a company well known for its "Civilization" board game, until its sale to MicroProse in 1997. His "1829" game was the first of the "18xx" board game series and some of his board games have inspired Sid Meier computer games such as "Railroad Tycoon". Context_4 : Bul, also called "Buul", "Boolik" or "Puluc", is a running-fight board game originating in Mesoamerica, and is known particularly among several of the Maya peoples of the Guatemalan highlands. It is uncertain whether this specific game dates back to the pre-Columbian Maya civilization, or whether instead it developed in the post-colonial era after the arrival of the Spanish conquistadores. Context_5 : BoardGameGeek is an online forum for board gaming hobbyists and a game database that holds reviews, images and videos for over 84,000 different tabletop games, including European-style board games, wargames, and card games. In addition to the game database, the site allows users to rate games on a 110 scale and publishes a ranked list of board games. Context_6 : This page explains commonly used terms in board games in alphabetical order. For a list of board games, see List of board games. For terms specific to chess, see Glossary of chess. For terms related to chess problems, see Glossary of chess problems. Context_7 : Robert Charles Bell (19172002) was the author of several books on board games, most importantly "Board and Table Games 1 & 2" (reprinted as "Board and Table Games from Many Civilizations"). This work won the Premier Award of the Doctors' Hobbies Exhibition, London. He was instrumental in popularizing traditional games, and is acknowledged as one of 11 "principal sources" in David Parlett's "The Oxford History of Board Games". Context_8 : David Parlett (born 1939) is a games scholar, historian, and translator from South London, who has studied both card games and board games. His published works include many popular books on games and the more academic volumes "The Oxford Guide to Card Games" and "The Oxford History of Board Games", both now out of print. Parlett also invented a number of board games, the most successful of which is Hare and Tortoise (1974). The German edition was awarded Spiel des Jahres (Game of the Year) in 1979. Context_9 : Bear games is a category of board games of which many have historical roots in the Roman Empire. They were played in parts of the Empire as far away as Turkey and France and are still played today, especially in Italy. All of the games are two-player abstract strategy board games. Normally, the game is played with three hunters and one bear on a patterned board. It bears similarity to the hunt games such as the Fox games, Rimau-rimau, and Bagha-Chall, however, there are no captures involved. The three hunters are trying to hem in the bear, and block its movements. Context_10 : Halma (from the Greek word meaning "jump") is a strategy board game invented in 1883 or 1884 by George Howard Monks, a US thoracic surgeon at Harvard Medical School. His inspiration was the English game "Hoppity" which was devised in 1854. fact_1 : Bul, also called "Buul", "Boolik" or "Puluc", is a running-fight board game originating in Mesoamerica, and is known particularly among several of the Maya peoples of the Guatemalan highlands. fact_2 : Halma (from the Greek word meaning "jump") is a strategy board game invented in 1883 or 1884 by George Howard Monks, a US thoracic surgeon at Harvard Medical School. Answer: yes

Answer: Are Bul and Halma both board games?

Question: Context_1 : The Wings Over the World tour was a series of concerts in 1975 and 1976 by the BritishAmerican rock band Wings performed in Britain, Australia, Europe, the United States and Canada. The North American leg constituted band leader Paul McCartney's first live performances there since the Beatles' final tour, in 1966, and the only time that Wings played in the US and Canada. The world tour was well-attended and critically acclaimed, and resulted in a triple live album, "Wings Over America", which Capitol Records released in December 1976. In addition, the tour was documented in the television film "Wings Over the World" (1979) and a cinema release, "Rockshow" (1980). Context_2 : Born in Liverpool, Moore worked as a fork-lift truck driver and part-time musician. He first played drums with the Silver Beetles in May 1960, at the suggestion of Allan Williams, and later that month travelled to Scotland with John Lennon, Paul McCartney, George Harrison and Stuart Sutcliffe, when they acted as a backing band for singer Johnny Gentle. During the tour, he was injured and lost his front teeth when the band's van, driven by Johnny Gentle, had a minor accident. However, Lennon and the Scottish organiser of the tour took him out of hospital and insisted that he perform with the rest of the group. After they returned to Liverpool, Moore had already decided that he had 'had enough of Lennon'; When he didn't appear for a gig one night, the rest of the band went round to his flat, and were told by his girlfriend that he had gone back to his steady job at the bottle works. When they tried to persuade her otherwise, she apparently said 'you can all piss off!'. He undertook one further performance with the group, before they left for Germany with Pete Best as their drummer in August 1960. Context_3 : Some of the threats have been extended to members of Obama's family, including First Lady Michelle Obama. Obama and his officials have generally declined to discuss death threats against him since entering the presidential race. Some commentators have suggested the unusually high number of death threats surrounding Obama are at least partially tied to the use of racist imagery and words used by some of Obama's critics to describe the president. In 2009 journalist Ronald Kessler reported that Obama received 400 percent more death threats than his predecessor. Later that year, the Secret Service stated that the volume of threats against Obama was "comparable to that under George W. Bush and Bill Clinton." Context_4 : "More popular than Jesus" is a remark made by the Beatles' John Lennon in 1966. During an interview, he argued that Christianity was in decline and that it may be outlived by rock music, explaining "We're more popular than Jesus now; I don't know which will go first rock 'n' roll or Christianity. Jesus was all right but his disciples were thick and ordinary. It's them twisting it that ruins it for me." The comment drew no controversy when originally published in the United Kingdom, but angry reactions flared up in Christian communities when it was republished in the United States five months later. Context_5 : The US Tour was Paul McCartney's third North American concert tour of the 21st century to promote his 2005's "Chaos and Creation in the Backyard" album. The tour began on 16 September 2005 in Miami, Florida and concluded on 30 November 2005 in Los Angeles, California. It was a commercial success grossing $77 million from 37 shows across North America and selling over 565,000 tickets. Rusty Anderson, Brian Ray, Paul "Wix" Wickens, and Abe Laboriel Jr. returned as the backing band, the first to fully remain intact for more than one solo McCartney tour, following the previous year's summer jaunt in the UK. McCartney's then-wife Heather Mills and their daughter, Beatrice, accompanied him on the tour and were in the audience every night. Context_6 : "Bad to Me" is a song credited to LennonMcCartney. In late interviews, John Lennon said that he wrote it for Billy J. Kramer with The Dakotas while on holiday in Spain. However, in a 1964 interview he said that he and Paul McCartney wrote it in the back of a van, so Paul contributed to it. Billy J. Kramer with The Dakotas released their recording of the song in 1963 and it became their first number 1 in the UK Singles Chart. Paul McCartney was present during the recording session at Abbey Road Studios. The single would be released in the US the following year, and become a top-ten hit there, reaching number 9. It became one of the first occasions a LennonMcCartney composition made the US Top 40 recorded by an artist other than the Beatles (the first being "A World Without Love" by Peter & Gordon; another being "Goodbye" by Mary Hopkin). Context_7 : "One After 909" (sometimes titled "The One After 909" in early recordings) is a song by the Beatles, written by John Lennon, with input from Paul McCartney (credited to LennonMcCartney), and originally released in 1970 on the album "Let It Be". The album version is the live performance from the rooftop concert which took place on 30 January 1969. This performance is also included in the "Let It Be" film. The song was written no later than spring 1960 and perhaps as early as 1957, and is one of the first LennonMcCartney compositions. "One After 909" is perhaps more reminiscent of early American rock 'n' roll than any of the other songs from the rooftop show, and as a joke for the rooftop chatter, Lennon sings a variant on the opening line of "Danny Boy" after the song is finished. Context_8 : Ivan Vaughan (18 June 1942 16 August 1993) was a boyhood friend of John Lennon, and later schoolmate of Paul McCartney at the Liverpool Institute, both commencing school there in September 1953. He was born on the same day as McCartney in Liverpool. He played bass part-time in Lennon's first band, The Quarrymen, and was responsible for introducing Lennon to McCartney at a community event (the Woolton village fete) on 6 July 1957, where The Quarrymen were performing. McCartney impressed Lennon, who invited McCartney to join the band, which he did a day later. This led to the formation of Lennon and McCartney's songwriting partnership, and later of The Beatles. Context_9 : The Beatles staged their third concert tour of America in August 1966, and it was the last commercial tour they would ever undertake. Lasting a total of 19 performances, with 17 shows in American venues and two in Toronto, Ontario, Canada, it was plagued with backlash regarding the controversy of John Lennon's remark about the band being "more popular than Jesus", death threats, and the band's own dissatisfaction with the noise levels and their ability to perform live. Although it was a commercial success, ticket sales had noticeably declined in number. After the tour, they would become a studio band and focused exclusively on record production. Context_10 : Dive! Dive! Live! is the first live video recorded by heavy metal singer Bruce Dickinson. It was filmed at the Wolf & Rismiller's Reseda Country Club on Sherman Way, Reseda, California, on 14 August 1990, while finishing the "Tattooed Millionaire" US tour leg. The video was produced by Paul Flattery and directed by Jim Yukichwho also worked on Iron Maiden's "Live After Death"and the backing band was the same as on "Tattooed Millionaire", save drummer Dickie Fliszar, who replaced Fabio del Rio to perform during the tour. The set-list consisted practically of all the songs from the "Tattooed Millionaire" sessions, except for "Darkness Be My Friend" from "All The Young Dudes" single. It included "Bring Your Daughter... to the Slaughter" and some cover versions played throughout the tour, like Deep Purple's "Black Night", AC/DC's "Sin City". "Riding with the Angels" is a song composed while Dickinson still played with Samson. fact_1 : The Wings Over the World tour was a series of concerts in 1975 and 1976 by the BritishAmerican rock band Wings performed in Britain, Australia, Europe, the United States and Canada. fact_2 : The North American leg constituted band leader Paul McCartney's first live performances there since the Beatles' final tour, in 1966, and the only time that Wings played in the US and Canada. fact_3 : Lasting a total of 19 performances, with 17 shows in American venues and two in Toronto, Ontario, Canada, it was plagued with backlash regarding the controversy of John Lennon's remark about the band being "more popular than Jesus", death threats, and the band's own dissatisfaction with the noise levels and their ability to perform live. Answer: Wings Over the World tour

Answer: What tour was Paul McCartneys first live performance since The Beatles 1966 US tour when the tour was plagued with backlash regarding the controversy of John Lennons remark about the band being more popular than Jesus, death threats, and the bands own dissatisfaction with the noise levels and their ability to perform live?

Question: Context_1 : The I-Active Valve Lift System (i stands for intelligence) or i-AVLS is a valvetrain technology implemented by Subaru in the 2.5L naturally aspirated engines SOHC to improve emissions, efficiency and performance. Note that AVLS is different from AVCS used on other Subaru engines. AVLS improves performance and efficiency by changing which camshaft is operating which of the two intake valves. The camshafts on all AVLS Subaru engines have specially designed lobes for intake valves. They feature two different cam profiles: a low/mid lift profile or a high lift profile. The two intake valves in each cylinder are operated by a rocker arm with its own cam lobe. The cam utilized is selected by the Engine Control Unit (ECU). To select different valve lift modes, oil pressure generated by the engine moves a pin which locks the two lobes together. At low engine speeds the low/mid lift camshafts increases the speed of air rushing into the engine thereby increasing torque and efficiency. At higher engine speeds the high lift camshafts fully open the intake valves, reducing resistance to incoming air and improving power. AVLS only operates one of the intake valves in each cylinder as the other is always open to promote swirl. Context_2 : The Ducati singles were single cylinder motorcycles, made by Ducati from 1950 to 1974. Chief Engineer Fabio Taglioni developed a desmodromic valve system in these years, a system that opens "and" closes the valves using the camshaft, without the need for valve springs. This valve system has become a trademark feature of Ducati motorcycles. Context_3 : An overhead valve engine (OHV engine) is an engine in which the valves are placed in the cylinder head. This was an improvement over the older flathead engine, where the valves were placed in the block next to the piston. Overhead camshaft (OHC) engines, while still overhead valve by definition, are usually categorized apart from other OHV engines. Context_4 : The Ducati 749 is a 90 V-twin Desmodromic valve actuated engine sport bike built by Ducati Motor Holding between 2003 and 2006. Designed by Pierre Terblanche, the 749 was available as the 749, 749 Dark, 749S, and 749R. It shared many of its parts with the 999, with the exception of a slightly smaller 180/55 profile rear tire, smaller cylinders, and different cylinder heads, giving it a smaller displacement of 748 cc. This smaller engine is higher revving and produces a lower peak horsepower than the larger engine used in the 999. The 749S model, like the 999, incorporates features rarely found on production motorcycles, including adjustable rake (23.5 or 24.5) and five-position adjustable rearset mounts. Context_5 : A desmodromic valve is a reciprocating engine valve that is positively closed by a cam and leverage system, rather than by a more conventional spring. Context_6 : The Ducati 998, a successor to the Ducati 996 and the final variation on the Ducati 916, was produced in various models from 2002 to 2004. The new Testastretta engine shared many similarities with the previous Desmoquattro engine in the 996, although it was completely new from the crankshaft up. Testastretta means narrow head and refers to a complete redesign of the cylinder heads. The desmodromic valve actuation method was retained. Context_7 : The Ducati 888 was a motorcycle manufactured by Ducati as an upgrade to the Ducati 851. The earlier 851 had introduced liquid cooling, computerized fuel injection and four-valve heads to the company's two cylinder motors. In 1991 Ducati increased the capacity of the 851 to 888cc to create the 888. Both engines featured the Desmoquattro valvetrain concept in which a four valve per cylinder motor was given desmodromic valve actuation, with cams both opening and closing the valves. Ducati's desmodromic system reduces the frictional penalty from conventional valve springs. Context_8 : The Ducati Superquadro engine is a 90 V-twin four-stroke motorcycle engine made by Ducati since 2011. It has Ducati's signature desmodromic valve system, with four valves per cylinder and gear/chain driven double overhead camshafts. It has been made in four displacements ranging from , with power as high as in the largest version. Context_9 : A valve actuator is the mechanism for opening and closing a valve. Manually operated valves require someone in attendance to adjust them using a direct or geared mechanism attached to the valve stem. Power-operated actuators, using gas pressure, hydraulic pressure or electricity, allow a valve to be adjusted remotely, or allow rapid operation of large valves. Power-operated valve actuators may be the final elements of an automatic control loop which automatically regulates some flow, level or other process. Actuators may be only to open and close the valve, or may allow intermediate positioning; some valve actuators include switches or other ways to remotely indicate the position of the valve. Context_10 : A gate valve, also known as a sluice valve, is a valve which opens by lifting a round or rectangular gate/wedge out of the path of the fluid. The distinct feature of a gate valve is the sealing surfaces between the gate and seats are planar, so gate valves are often used when a straight-line flow of fluid and minimum restriction is desired. The gate faces can be parallel, but are most commonly wedge-shaped. Gate valves are primarily used to permit or prevent the flow of liquids, but typical gate valves shouldn't be used for regulating flow, unless they are specifically designed for that purpose. Because of their ability to cut through liquids, gate valves are often used in the petroleum industry. For extremely thick fluids, a specialty valve often known as a knife gate valve is used to cut through the liquid. On opening the gate valve, the flow path is enlarged in a highly nonlinear manner with respect to percent of opening. This means that flow rate does not change evenly with stem travel. Also, a partially open gate tends to vibrate from the fluid flow. Most of the flow change occurs near shutoff with a relatively high fluid velocity causing gate and seat wear and eventual leakage if used to regulate flow. Typical gate valves are designed to be fully opened or closed. When fully open, the typical gate valve has no obstruction in the flow path, resulting in very low friction loss. fact_1 : The Ducati 749 is a 90 V-twin Desmodromic valve actuated engine sport bike built by Ducati Motor Holding between 2003 and 2006. fact_2 : A desmodromic valve is a reciprocating engine valve that is positively closed by a cam and leverage system, rather than by a more conventional spring. Answer: spring

Answer:
The desmodromic valve engine, widely used by Ducati, uses cams and levers to close its valves in place of what conventional mechanism?