Megastructures

Columns: # | Country | Title | Subject | Original Airdate
01 | United States | Golden Gate Bridge | Iconic bridge over San Francisco Bay in San Francisco | 2005-03-02 | 02 | United States | Alcatraz | Former prison island in San Francisco Bay , California | 2005-03-16 | 03 | United States | Inside The Pentagon | Headquarters of the US Department of Defense in Arlington , Virginia | 2005-04-01 | 04 | Singapore | World 's Busiest Port | Port of Singapore , Republic of Singapore | 2005-05-13 | 05 | South Africa | Tau Tona , City of Gold | World 's deepest mining operations in Carletonville , South Africa | 2005-05-21 | 06 | United States | Las Vegas | 2005-06-22 | 07 | Canada | Black Gold ( Oil Mine ) | Syncrude and Shell Canada in oil sands located in Alberta , Canada | 2005-07-20

Example questions:
What year was the newest megastructure in S2 created ? | For this geographic location which state contIns the largest Megastructure S2 citites ? | Between the Megastructures , USS Virginia and Airbus A380 , which was used first ? | What did the oldest building on the season 2 of Megastructures do ?

Answers:
2005 | California | USS Virginia ( SSN-774 ) | a federal prison