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IGC researchers include Esther Duflo , Nicholas Bloom , Rachel Glennerster , Lant Pritchett , John Van Reenen ( economist ) , Nicholas Stern , Dean Karlan , Edward Miguel , and Maurice Obstfeld .
 person: Esther Duflo; person: Nicholas Bloom; person: Rachel Glennerster; person: Lant Pritchett; person: John Van Reenen ( economist ); organization: Nicholas Stern; person: Dean Karlan; person: Edward Miguel; person: Maurice Obstfeld
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Esther Duflo; person: Nicholas Bloom; person: Rachel Glennerster; person: Lant Pritchett; person: John Van Reenen ( economist ); organization: Nicholas Stern; person: Dean Karlan; person: Edward Miguel; person: Maurice Obstfeld