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Two years later Seán Lemass took over from Éamon de Valera as Taoiseach and the modernising process began .
 person: Seán Lemass; person: Éamon de Valera; organization: Taoiseach
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: Seán Lemass, Éamon de Valera, Taoiseach 
Answer:
 person: Seán Lemass; person: Éamon de Valera; organization: Taoiseach