Answer the following question: Information: - Dniproavia is an airline headquartered at Dnipro International Airport in Dnipro, Ukraine, operating scheduled and chartered passenger flights. - As of December 2015 , Ukrainian airline Dniproavia serves the following destinations : - Ukraine (tr. ) is a sovereign state in Eastern Europe, bordered by Russia to the east and northeast, Belarus to the northwest, Poland and Slovakia to the west, Hungary, Romania, and Moldova to the southwest, and the Black Sea and Sea of Azov to the south and southeast, respectively. Ukraine is currently in territorial dispute with Russia over the Crimean Peninsula which Russia annexed in 2014 but which Ukraine and most of the international community recognise as Ukrainian. Including Crimea, Ukraine has an area of , making it the largest country entirely within Europe and the 46th largest country in the world. It has a population of about 44.5 million, making it the 32nd most populous country in the world. - An airline is a company that provides air transport services for traveling passengers and freight. Airlines utilize aircraft to supply these services and may form partnerships or alliances with other airlines for codeshare agreements. Generally, airline companies are recognized with an air operating certificate or license issued by a governmental aviation body. Given the information above, choose from the list below the object entity that exhibits the relation 'is a list of' with the subject 'dniproavia destinations'. Choices: - aircraft - airline - airport - company - sovereign state - state
Answer:
airport