76795
Pure silicon crystals are very rarely found in nature , but notable exceptions are crystals as large as to 0.3 " mm across found during sampling gases from the Kudriavy volcano on Iturup , one of the Kuril Islands .
 location: Kudriavy volcano; location: Iturup; location: Kuril Islands
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Kudriavy volcano, Iturup, Kuril Islands 
Answer:
 location: Kudriavy volcano; location: Iturup; location: Kuril Islands