Premise: Netaji Subhas Chandra Bose International Airport (IATA: CCU, ICAO: VECC) is an international airport located in Kolkata, West Bengal, India, serving the Kolkata metropolitan area. It is located approximately 17 km from the city center. The airport was earlier known as Dum Dum Airport before being renamed after Netaji Subhas Chandra Bose, a prominent leader of the Indian independence movement.
Hypothesis: Netaji Subhas Chandra Bose International Airport was formerly known as Dum Dum Airport.