Information: - A hardcourt (or hard court) is a surface or floor on which a sport is played, most usually in reference to tennis courts. They are typically made of rigid materials such as asphalt or concrete, and covered with acrylic material to seal the surface and mark the playing lines, while providing some cushioning. Historically, hardwood surfaces were also in use in indoor settings, similar to an indoor basketball court, but these are now rare. - DecoTurf is a tennis hardcourt constructed from layers of acrylic, rubber, silica, and other materials on top of an asphalt or concrete base. It is manufactured by the sports surfaces division of California Products Corporation, based in Andover, Massachusetts. - The Cullman-Heyman Tennis Center is a tennis complex located on the campus of Yale University in New Haven, Connecticut. It is the venue for the New Haven Open at Yale. The complex consists of 22 outdoor and 8 indoor DecoTurf hardcourts, and 5 outdoor clay courts. The stadium, known as the "Connecticut Tennis Center Stadium", was built in 1991, and by 2009 it had seats for 15,000 spectators. The current capacity of the Connecticut Tennis Center Stadium at Cullman-Heyman Tennis Center is around 15,000, making it the third largest tennis venue in the United States and one of the largest in the world by capacity. - The Connecticut Open is a professional tennis tournament played on outdoor hard courts . It is a WTA Premier Tournament on the WTA Tour . Until 2010 the tournament was part of the ATP World Tour 250 series of the ATP Tour . It is held annually at the Cullman - Heyman Tennis Center in New Haven , Connecticut , United States , just before the fourth and last Grand Slam tournament of the year , the US Open . - A clay court is one of many different types of tennis court. Clay courts are made of crushed shale, stone or brick. The French Open uses clay courts, making it unique among the Grand Slam tournaments. Clay courts are more common in Continental Europe and Latin America than in the United States, Canada or Britain. Two types exist: red clay, the more common variety, and green clay, also known as "rubico", which is a harder surface. Although less expensive to construct than other types of tennis courts, the maintenance costs of clay are high as the surface must be rolled to preserve flatness. The water content must also be balanced; green courts are often sloped in order to allow water run-off. What entity does 'connecticut open ' has the relation 'surface played on' with?
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Answer: hardcourt

Information: - Nismo (abbreviated from ) is the in-house tuning, motorsports and performance division of Nissan. Formed in 1984 as a result of a merger of two motorsport departments, Nismo cars have participated in JSPC, JTCC, 24 Hours of Le Mans and 24 Hours of Daytona. They currently participate in the Super GT and the Blancpain GT Series, and in 2015 will compete alongside Audi, Toyota and Porsche in the FIA World Endurance Championship in the LMP1 class, with the new Nissan GT-R LM NISMO. - BMX, an abbreviation for bicycle motocross, is a cycle sport performed on BMX bikes, either in competitive BMX racing or freestyle BMX, or else in general on- or off-road recreation. BMX began when young cyclists appropriated motocross tracks for fun, racing and stunts, eventually evolving specialized BMX bikes and competitions. - Fourcross is a form of four-wheeled downhill mountain biking, pioneered in Canada and the United States. It has the benefit of being suitable for disabled riders. The sport each year is part of the Crankworx festival - The 2009 UCI Mountain Bike World Cup includes three disciplines : cross-country , downhill and four - cross . It is sponsored by Nissan . - Mountain bike racing (shortened MTB or ATB racing) is a competitive cycle sport held on off-road terrain. The Union Cycliste Internationale (UCI) recognised the discipline relatively late in 1990, when it sanctioned the world championships in Durango, Colorado. The first UCI Mountain Bike World Cup series took place in 1988. Its nine-race circuit covered two continentsEurope and North Americaand was sponsored by Grundig. Cross-country racing was the only World Cup sport at this time. In 1993, a six-event downhill World Cup was introduced. In 1996, cross-country mountain biking events were added to the Olympic Games. In 2006, cross-country mountain biking events became part of the World Deaf Cycling Championships for the first time in San Francisco, USA. - Four-cross (4X), also called mountain-cross, not to be confused with fourcross, is a relatively new style of mountain bike racing where four bikers race downhill on a prepared, BMX like, track, simply trying to get down first. These bikes are generally either full suspension with 3 to 4inches of travel, or hardtails, and typically have relatively strong frames. They run a chainguide on front and gears on the back. They have slack head angles, short chainstays and low bottom brackets for good cornering and acceleration. In recent years the tracks raced on have been rougher and less like those used in BMX. - , usually shortened to Nissan (or ; Japanese:, is a Japanese multinational automobile manufacturer headquartered in Nishi-ku, Yokohama, Japan. Nissan Motor sells its cars under the Nissan, Infiniti, and Datsun brands with in-house performance tuning products labelled Nismo. What entity does '2009 uci mountain bike world cup' has the relation 'sport' with?
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Answer:
mountain biking