I want to know the answer to the following question:
In 2015, the Airports Council International gave what award to Indira Gandhi International Airport?
All the background I'm provided with is that "In 2010, Indira Gandhi International Airport (IGIA) was conferred the fourth best airport award in the world in the 15–25 million category, and Best Improved Airport in the Asia-Pacific Region by Airports Council International.". Is that enough to answer the question?
Answer: no