Definition: 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).
Input: Context: Ski mountaineering is a skiing discipline that involves climbing mountains either on skis or carrying them, depending on the steepness of the ascent, and then descending on skis. There are two major categories of equipment used, free-heel Telemark skis and skis based on Alpine skis, where the heel is free for ascents, but is fixed during descent. The discipline may be practiced recreationally or as a competitive sport., A Vertical Race is a special kind of ski mountaineering without the typical downhill skiing after ascending. At the mountain running and climbing passages the runners have to carry their skis in their backpacks. Vertical Races for women and men are part of all international ski mountaineering competitions of the International Council for Ski Mountaineering Competitions (ISMC) as well as at many national competitions. The Union Internationale des Associations d'Alpinisme (UIAA)is working toward the goal of having Vertical Race become an Olympic discipline at the 2018 Winter Olympics, ., The International Council for Ski Mountaineering Competitions (ISMC) located in the "Floridablanca 84" in Barcelona was part of the Union Internationale des Associations d'Alpinisme (UIAA) and responsible for ski mountaineering and vertical race competitions. The ISMC, which was founded in 1999 as follow-up institution of the Comité International du Ski-Alpinisme de Compétition (CISAC), merged into the International Ski Mountaineering Federation (ISMF) in 2008., The 2004 World Championship of Ski Mountaineering was the second World Championship of Ski Mountaineering sanctioned by the International Council for Ski Mountaineering Competitions ( ISMC ) , held in the Spanish Aran Valley from March 1 to March 6 , 2004 . Compared to the 2002 World Championship a relay race and a vertical race competition was added ., The Comité International du Ski-Alpinisme de Compétition (CISAC) was the international committee of competition ski mountaineering and was founded in 1991., Subject: 2004 world championship of ski mountaineering, Relation: sport, Options: (A) climbing (B) ski mountaineering (C) skiing (D) sport
Output:
skiing