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When he too died , his heir Leonardo III Tocco attempted to seek Venetian protection , whereupon the Ottomans began to occupy the remaining mainland territories , seizing Arta in 1449 .
 person: Leonardo III Tocco; location: Venetian; location: Ottomans; location: Arta
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: Leonardo III Tocco, Venetian, Ottomans, Arta 
Answer:
 person: Leonardo III Tocco; location: Venetian; location: Ottomans; location: Arta