Table: busiest_airports_africa_2
Columns: country
airport
city
2010
change_10_09

Question: What is the 2010 total for ghana?
SQL: SELECT COUNT("2010") FROM busiest_airports_africa_2 WHERE "country" = 'ghana'

Question: Which country is the nnamdi azikiwe international airport in?
SQL: SELECT "country" FROM busiest_airports_africa_2 WHERE "airport" = 'nnamdi azikiwe international airport'