Question: Which First used has a Quantity of 26?
SQL: SELECT "First used" FROM "2-148813-2" WHERE "Quantity" = 26.0;

Question: Which Designation has a Manufacturer of Siemens, and a Quantity of 52?
SQL: SELECT "Designation" FROM "2-148813-2" WHERE "Manufacturer" = 'Siemens' AND "Quantity" = 52.0;

Question: Which Designation has a Quantity of 52?
SQL: SELECT "Designation" FROM "2-148813-2" WHERE "Quantity" = 52.0;

Question: Which Quantity has a Designation of Type 4?
SQL: SELECT AVG("Quantity") FROM "2-148813-2" WHERE "Designation" = 'Type 4';

Question: Which model number does Bombardier manufacture?
SQL: SELECT "Model No." FROM "2-148813-2" WHERE "Manufacturer" = 'Bombardier';

Question: Which Car numbers have a First used of currently on order?
SQL: SELECT "Car numbers" FROM "2-148813-2" WHERE "First used" = 'currently on order';