CREATE TABLE table_5427 ("Locale" TEXT, "Skip" TEXT, "Ends Won" FLOAT, "Ends Lost" FLOAT, "Blank Ends" FLOAT, "Stolen Ends" FLOAT, "Shot Pct." FLOAT)

What's Ontario's highest Ends Lost?
SELECT MAX("Ends Lost") FROM table_5427 WHERE "Locale" = 'ontario'
SELECT MAX("Ends Lost") FROM "table_5427" WHERE "Locale" = 'ontario'