4960
His models were niellos and copper engravings from the workshops of Jacopo de Barbari and Albrecht Dürer .
 person: Jacopo de Barbari; person: Albrecht Dürer
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: Jacopo de Barbari, Albrecht Dürer 
Answer:
 person: Jacopo de Barbari; person: Albrecht Dürer