CREATE TABLE table_55342 ("Finish Position" TEXT, "Lengths Behind" TEXT, "Post Position" FLOAT, "Horse name" TEXT, "Trainer" TEXT, "Jockey" TEXT, "Owner" TEXT, "Post Time Odds" TEXT)

Who the Owner that has a Lengths Behind of 5 ?
SELECT "Owner" FROM table_55342 WHERE "Lengths Behind" = '5½'
SELECT "Owner" FROM "table_55342" WHERE "Lengths Behind" = '5½'