Information: - Skiing is a mode of transport, recreational activity and competitive winter sport in which the participant uses skis to glide on snow. Many types of competitive skiing events are recognized by the International Olympic Committee (IOC), and the International Ski Federation (FIS). - Snowboarding is a recreational activity and Olympic and Paralympic sport that involves descending a snow-covered slope while standing on a snowboard attached to a rider's feet. - Freestyle skiing is a skiing discipline comprising aerials, moguls, cross, half-pipe and slopestyle as part of the winter olympics. It can consist of a skier performing aerial flips and spins, and can include skiers sliding rails and boxes on their skis. It is also commonly referred to as freeskiing, jibbing, as well as many other names around the world. - A half-pipe is a structure used in gravity extreme sports such as snowboarding, skateboarding, skiing, freestyle BMX, and skating. The structure resembles a cross section of a swimming pool, essentially two concave ramps (or quarter-pipes), topped by copings and decks, facing each other across a flat transition, also known as a "tranny". Originally half-pipes were half sections of a large diameter pipe. Since the 1980s, half-pipes contain an extended "flat bottom" between the quarter-pipes; the original style half-pipes are no longer built. Flat ground provides time to regain balance after landing and more time to prepare for the next trick. - Freestyle BMX is bicycle motocross stunt riding on BMX bikes. It is an extreme sport descended from BMX racing that consists of five disciplines: street, park, vert, trails, and flatland. - Skateboarding is an action sport which involves riding and performing tricks using a skateboard. Skateboarding can also be considered a recreational activity, an art form, a job, or a method of transportation. Skateboarding has been shaped and influenced by many skateboarders throughout the years. A 2009 report found that the skateboarding market is worth an estimated $4.8 billion in annual revenue with 11.08 million active skateboarders in the world. In 2016, it was announced that skateboarding will be represented at the 2020 Olympic Games in Tokyo, Japan. - A snowmobile, also known as a sled or a snowmachine, is a vehicle designed for winter travel and recreation on snow. It is designed to be operated on snow and ice and does not require a road or trail but most are driven on open terrain or trails. Snowmobiling is a sport than many people have taken on as a serious hobby. - Northern Europe is the northern part or region of Europe. Although no definitive borders or definition exists for the term, geographically, Northern Europe may be considered to consist approximately of all of Europe above the 52nd parallel north; which includes (from west to east) most or all of: Iceland, the Republic of Ireland, the Isle of Man, the United Kingdom, the Faroe Islands, the Netherlands, northern Germany, Denmark, Norway, Sweden, northern Poland, Finland, Estonia, Latvia, Lithuania and northwest Russia. However, narrower definitions may also be used based on other geographical factors, such as climate and ecology. Greenland, geographically a part of North America, is politically a part of the Kingdom of Denmark, and may be included depending on the definition. - A ski resort is a resort developed for skiing, snowboarding, and other winter sports. In Europe, most ski resorts are towns or villages in or adjacent to a ski area a mountainous area with pistes, ski trails and a ski lift system. In North America, it is more common for ski areas to exist well away from towns, so ski resorts usually are destination resorts, often purpose-built and self-contained, where skiing is the main activity. - The 2005 FIS Freestyle World Ski Championships took place at the Rukatunturi ski resort in Kuusamo , Finland , between March 17th and March 20th . Five events were held for each sex , including half - pipe , skicross , aerials , moguls and dual moguls . - The FIS Freestyle World Ski Championships is the world championship organized by the FIS for Freestyle Skiing. It was first organized in 1986 and is now held every odd year. Currently, the events included in the world championships are Moguls, Dual Moguls, Aerials, Ski cross, Slopestyle and Half-pipe. Formerly, Acroski and a combined event were held. - Finland , officially the Republic of Finland, is a sovereign state in Northern Europe. A peninsula with the Gulf of Finland to the south and the Gulf of Bothnia to the west, the country has land borders with Sweden to the northwest, Norway to the north, and Russia to the east. Estonia is south of the country across the Gulf of Finland. Finland is a Nordic country situated in the geographical region of Fennoscandia, which also includes Scandinavia. Finland's population is 5.5 million (2014), staying roughly on the same level over the past two decades. The majority of the population is concentrated in the southern region. In terms of area, it is the eighth largest country in Europe and the most sparsely populated country in the European Union. - Hiking is the preferred term, in Canada and the United States, for a long, vigorous walk, usually on trails (footpaths), in the countryside, while the word walking is used for shorter, particularly urban walks. On the other hand, in the United Kingdom, and the Republic of Ireland, the word "walking" is acceptable to describe "all forms" of walking, whether it is a walk in the park or backpacking in the Alps. The word hiking is also often used in the UK, along with rambling (a slightly old-fashioned term), hillwalking, and fell walking (a term mostly used for hillwalking in northern England). In New Zealand a long, vigorous walk or hike is called tramping. It is a popular activity with numerous worldwide, and studies suggest that all forms of walking have health benefits. - Slopestyle is a winter sport in which athletes ski or snowboard down a course including a variety of obstacles including rails, jumps and other terrain park features. Points are scored for amplitude, originality and quality of tricks. The discipline has its roots in action sports like skateboarding and BMX and has very successfully crossed over into the snow sports worlds of skiing and snowboard. Twin-tip skis are used and are particularly useful if the skier lands backwards. Slopestyle tricks fall mainly into four categories: spins, grinds, grabs and flips. - Rukatunturi is a high fell and a ski resort in Kuusamo, Finland. Apart from downhill skiing, there are over 500km of cross-country skiing tracks. Also snowmobiles can be rented to enjoy some of the area's 600km of snowmobile routes (of which 100km are safari organizers' private routes). Ruka is also the southern end of the Karhunkierros hiking trail. The total of trails in Ruka and Kuusamo area is: 160km of hiking trails, 605km of biking routes, 350km of classified paddling routes (including class 1-4 whitewater paddling) and 100km of boating routes. - Ski cross is a type of skiing competition. Despite its being a timed racing event, it is often considered part of freestyle skiing because it incorporates terrain features traditionally found in freestyle. Ski cross courses have both naturally occurring terrain and artificial features including big-air jumps and high-banked turns. What sets ski cross apart from other alpine skiing disciplines is that there's more than one skier racing down the course. Any intentional contact with other competitors leads to disqualification. What entity does 'fis freestyle world ski championships 2005' has the relation 'sport' with?
The answer to this question is:
freestyle skiing