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The earliest reference to his having written poetry is found in his biography by al-Isfahani , written 43 years after his death .
 person: al-Isfahani
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: al-Isfahani 
Answer:
 person: al-Isfahani