question: In what year did Indira Gandhi International Airport earn an award for being forth best airport in the world in the 15-25 million category ?
answer: 2010
turker_answer: The Indira Gandhi International Airport earned an award for being the forth best airport in the world in the 15-25 million category in 2010 .
rule-based: Indira Gandhi International Airport earned an award for being forth best airport in the world in the 15-25 million category in 2010 .