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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 .
 Ski Mountaineering, Ski Mountaineering, International Council for Ski Mountaineering Competitions, Aran Valley
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ski Mountaineering, Ski Mountaineering, International Council for Ski Mountaineering Competitions, Aran Valley