Detailed Instructions: In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).
Q: Context: 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., The FIS Freestyle World Ski Championships 2009 were held between March 2 and March 8 in Inawashiro , Japan ., 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. , 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., 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., Subject: fis freestyle world ski championships 2009, Relation: sport, Options: (A) freestyle skiing (B) skateboarding (C) ski cross (D) sport
A:
freestyle skiing