Question: What is the specification of the locomotives with a total produced more than 19 and a model of FB-1?
SQL: SELECT "Specification" FROM "2-1257252-2" WHERE "Total produced" > 19.0 AND "Model" = 'FB-1';

Question: What is the build date of the locomotives with a total produced less than 45 and a FB-2 model?
SQL: SELECT "Build date" FROM "2-1257252-2" WHERE "Total produced" < 45.0 AND "Model" = 'FB-2';

Question: What is the prime mover of the locomotive with a FA-2 model?
SQL: SELECT "Prime mover" FROM "2-1257252-2" WHERE "Model" = 'FA-2';

Question: What is the build date of the locomotive with a FA-2 model?
SQL: SELECT "Build date" FROM "2-1257252-2" WHERE "Model" = 'FA-2';