question: Duflo received an award for what ?
answer: American economist under the age of 40 who has made the `` most significant contribution to economic thought and knowledge . ''
turker_answer: Duflo received an award for American economist under the age of 40 who has made the `` most significant contribution to economic thought and knowledge . ''
rule-based: Duflo received an award for american economist under the age of 40 who has made the `` most significant contribution to economic thought and knowledge . .