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In Iran he dug at Tepe Nush-i Jan under the direction of David Stronach , with whom he wrote Nush-i Jan I. The Major Buildings of the Median Settlement .
 location: Iran; person: David Stronach
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: Iran, David Stronach 
Answer:
 location: Iran; person: David Stronach