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When it approved Avonex in May , the FDA said both Biogen 's product and Betaseron were developed under the incentives of the Ophran Drug Act which provides seven years of marketing exclusivity for products that treat rare diseases .
 organization: Biogen; else: Ophran Drug Act; else: Avonex; organization: FDA; else: Betaseron
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
 Entities: Biogen, Ophran Drug Act, Avonex, FDA, Betaseron 
Answer:
 organization: Biogen; else: Ophran Drug Act; else: Avonex; organization: FDA; else: Betaseron