Question: What Nation of citizenship has a Stock car vehicle with a year of 1999?
SQL: SELECT "Nation of citizenship" FROM "2-10526612-1" WHERE "Type of vehicle" = 'Stock car' AND "Year" = 1999.0;

Question: What driver has a Stock car vehicle with a year of 1999?
SQL: SELECT "Driver" FROM "2-10526612-1" WHERE "Type of vehicle" = 'Stock car' AND "Year" = 1999.0;

Question: What Nation of citizenship has a Stock car vehicle with a year of 2012?
SQL: SELECT "Nation of citizenship" FROM "2-10526612-1" WHERE "Type of vehicle" = 'Stock car' AND "Year" = 2012.0;

Question: What year has the vehicle of Open wheel and a racing series of Formula One with a Nation of citizenship in Germany.
SQL: SELECT "Year" FROM "2-10526612-1" WHERE "Type of vehicle" = 'Open wheel' AND "Racing series" = 'Formula One' AND "Nation of citizenship" = 'Germany';