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Pushkin 's great-grandfather , Abram Petrovich Gannibal ( 1696 – 1781 ) , was a black imperial page , originally of a chiefly family in his native Africa , that was raised by Emperor Peter the Great himself .
 person: Pushkin; person: Abram Petrovich Gannibal; location: Africa; person: Peter the Great
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: Pushkin, Abram Petrovich Gannibal, Africa, Peter the Great 
Answer:
 person: Pushkin; person: Abram Petrovich Gannibal; location: Africa; person: Peter the Great