~chicago-3
Which airport in Chicago is ranked among the world's busiest airports?
Which airport in Chicago is ranked among the world's top busiest airports?
What are the major airports serving Chicago?
What is Chicago known for in terms of urban planning and architecture?
What is the name of the new airport in the Illinois suburbs of Chicago?
What is the significance of Chicago in the freight rail industry?
What is the economic significance of O'Hare International Airport?
Which national news outlet is based in Chicago?
What is the informal name for the entire Chicago metropolitan area?
What is the importance of Chicago as a transportation hub?
Where is O'Hare International Airport ranked in terms of passenger traffic?
What industries play major roles in Chicago's economy?
Who is the author of the book 'Chicago: A Biography'?
Are there any alternative airports in the Chicago area?
What transit systems operate in Chicago?
