Question: What shows for series 4 when the seat shows 1?
SQL: SELECT "Series 4" FROM "2-1787654-2" WHERE "Seat" = 1.0;

Question: What is the seat number when Series 3 shows Dana Bérová?
SQL: SELECT AVG("Seat") FROM "2-1787654-2" WHERE "Series 3" = 'Dana Bérová';