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A founding member of the Belgian confederation of nature conservation and environmental organisations , Mark Dubrulle was National Secretary of the Bond Beter Leefmilieu / Inter-environnement from 1970 to 1980 , an activist group which he co-founded , together with Michel Didisheim and half a dozen friends .
 location: Belgian; person: Mark Dubrulle; person: Michel Didisheim
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: Belgian, Mark Dubrulle, Michel Didisheim 
Answer:
 location: Belgian; person: Mark Dubrulle; person: Michel Didisheim