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Following this , Yrjö Sotamaa , president of the University of Art and Design Helsinki at the time , proposed the merger of Aalto University 's founding schools in his president 's opening speech in 2005 .
 person: Yrjö Sotamaa; organization: University of Art and Design Helsinki; person: Aalto
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: Yrjö Sotamaa, University of Art and Design Helsinki, Aalto 
Answer:
 person: Yrjö Sotamaa; organization: University of Art and Design Helsinki; person: Aalto