CREATE TABLE table_48278 ("Date" TEXT, "U-boat" TEXT, "Name" TEXT, "Nationality" TEXT, "Tonnage  ( GRT ) " FLOAT, "Fate" TEXT)

Which Nationality has a Fate of sunk (mine), and a Tonnage (GRT) smaller than 2,266?
SELECT "Nationality" FROM table_48278 WHERE "Fate" = 'sunk (mine)' AND "Tonnage (GRT)" < '2,266'
SELECT "Nationality" FROM "table_48278" WHERE "Fate" = 'sunk (mine)' AND "Tonnage (GRT)" < '2,266'