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Stone studied chemistry and biology at Boston University , while also serving as assistant chemist to the Massachusetts State Agricultural Experiment Station from 1884 – 1886 .
 person: Stone; organization: Boston University; organization: Massachusetts
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Stone; organization: Boston University; organization: Massachusetts