Question: Information: - A Floorless Coaster is a type of steel roller coaster manufactured by Bolliger & Mabillard where riders sit with no floor underneath them allowing their feet to swing freely just above the track. Development of the Floorless Coaster began between 1995 and 1996 with Medusa (now known as "Bizarro") at Six Flags Great Adventure opening on April 2, 1999, making it the world's first Floorless Coaster. Floorless Coasters also tend to have 3 to 7 inversions incorporated in the layout of the coaster. Recently, Bolliger & Mabillard have used floorless trains on their Dive Coasters, such as Griffon and SheiKra. Though they contain floorless trains, the coasters are still not considered Floorless Coasters as B&M classifies them as another model. Also, Maurer Sohne have designed their own version of the Floorless Coaster, a variant of their X-Car called "X-Car Floorless", but currently do not have any installations. - South Texas is a region of the U.S. state of Texas that lies roughly south of -- and sometimes including -- San Antonio. The southern and western boundary is the Rio Grande, and to the east it is the Gulf of Mexico. The population of this region is about 4.67 million according to the 2013 census estimates. The southern portion of this region is often referred to as the Rio Grande Valley. The eastern portion along the Gulf of Mexico is also referred to as the Coastal Bend. - Central Texas is a region in the U.S. state of Texas surrounding Austin and roughly bordered by Brady to Kerrville to La Grange to Waco. Central Texas contains the Texas Hill Country and corresponds to a physiographic section designation within the Edwards Plateau, in a geographic context. - Six Flags Fiesta Texas is a theme park built by the Gaylord Entertainment Company and now owned and operated by Six Flags. Fiesta Texas opened on March 14, 1992 in San Antonio, Texas. Spanning , the park was originally built to become a destination musical show park with its focus on the musical culture of the state of Texas. - Six Flags Entertainment Corporation, or simply Six Flags, is an amusement park corporation based in the United States, with properties in the US, Canada, and Mexico. It is the largest amusement park company based on the number of properties it owns, and the fifth-most popular in terms of attendance. The company maintains 18 properties throughout North America consisting of theme parks, thrill parks, water parks, and family entertainment centers. In 2009, Six Flags properties hosted 23.9million guests. - The Dive Coaster is a steel roller coaster manufactured by Bolliger & Mabillard where riders experience a moment of free-falling with at least one 90-degree drop. Unlike other roller coasters where the lift hill takes the train directly to the first drop, a Dive Coaster lift hill leads to a flat section of track followed by a holding brake which stops the train just as it enters the vertical drop. After a few seconds, the train is released into the drop. - Superman : Krypton Coaster is a Bolliger & Mabillard Floorless Coaster at the Six Flags Fiesta Texas amusement park in San Antonio , Texas , USA . Opened in 2000 , Superman : Krypton Coaster was one of the first floorless roller coasters in the world . The well - received ride held the title for the world 's tallest vertical loop ( 145 feet ) from its opening until 2013 . It is also known as for being the world 's tallest and fastest floorless coaster at 168 ft ( 51 m ) high and a top speed of 70 mph ( 110 km / h ) . - Six Flags Great Adventure is an amusement park located in Jackson, New Jersey, owned by Six Flags Entertainment Corp. Situated between New York City and Philadelphia, the park complex also contains the Hurricane Harbor water park. - The Texas Triangle is one of eleven "megaregions" in the United States. These are urban areas that are much greater in scale than a metropolitan statistical area (MSA), defined by the US Census Bureau. These regions also are known as "megapolitan areas". The Texas Triangle is formed by the three main cities, Houston, Dallas, and San Antonio, connected by a highway system of Interstate 45, Interstate 10, and Interstate 35. The area is sometime also referred to as the Texaplex. - Texas is the second largest state in the United States by both area and population. Geographically located in the south central part of the country, Texas shares borders with the U.S. states of Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the west, and the Mexican states of Chihuahua, Coahuila, Nuevo Leon, and Tamaulipas to the southwest, while the Gulf of Mexico is to the southeast. - A roller coaster is an amusement ride developed for amusement parks and modern theme parks. LaMarcus Adna Thompson obtained a patent regarding roller coasters on January 20, 1885, which were made out of wood, but this patent is considerably later than the "Russian mountains" described below. In essence a specialized railroad system, a roller coaster consists of a track that rises in designed patterns, sometimes with one or more "inversions" (such as vertical loops) that briefly turn the rider upside down. The track does not necessarily have to be a complete circuit, as shuttle roller coasters demonstrate. Most roller coasters have multiple cars in which passengers sit and are restrained. Two or more cars hooked together are called a train. Some roller coasters, notably wild mouse roller coasters, run with single cars. - San Antonio (Spanish for "Saint Anthony"), officially the City of San Antonio, is the seventh-most populated city in the United States and the second-most populous city in the state of Texas, with a population of 1,409,019. It was the fastest growing of the top 10 largest cities in the United States from 2000 to 2010, and the second from 1990 to 2000. The city straddles South Texas and Central Texas and is on the southwestern corner of an urban megaregion known as the Texas Triangle. What object entity has the relation of 'subclass of' with the subject 'superman: krypton coaster'? Choices: - adventure - amusement park - area - city - company - corporation - dive coaster - entertainment - essence - fifth - highway - hill - model - moment - musical - number - opening - park - part - patent - plateau - population - roller - roller coaster - russian - saint - scale - second - section - show - spanish - state - steel roller coaster - track - triangle - type - valley - water park - wood - world
Answer:
steel roller coaster