Question: Name the most lot number with notes of B4 bogies and diagram of 185
SQL: SELECT MAX("Lot No.") FROM "2-12992801-1" WHERE "Notes" = 'B4 bogies' AND "Diagram" = 185.0;

Question: Name the fleet numbers for diagram of 186 and lot number of 30798
SQL: SELECT "Fleet numbers" FROM "2-12992801-1" WHERE "Diagram" = 186.0 AND "Lot No." = 30798.0;