Which Net profit/loss (SEK) has a Basic eps (SEK) of -6.58, and Employees (Average/Year) larger than 31,035?
CREATE TABLE "financial_performance" (
  "year_ended" text,
  "passengers_flown" real,
  "employees_average_year" real,
  "net_profit_loss_sek" real,
  "basic_eps_sek" real
);
SELECT SUM("net_profit_loss_sek") FROM "financial_performance" WHERE "basic_eps_sek"=-6.58 AND "employees_average_year">'31,035';