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When the president became too incapacitated and could not function normally , Nancy Reagan began supporting federally-funded embryonic stem cell research in the hopes that such research could lead to an Alzheimer 's cure .
 person: Nancy Reagan; organization: Alzheimer
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: Nancy Reagan, Alzheimer 
Answer:
 person: Nancy Reagan; organization: Alzheimer