user: Question: Who the Owner that has a Lengths Behind of 5½?
Columns: ['Finish Position', 'Lengths Behind', 'Post Position', 'Horse name', 'Trainer', 'Jockey', 'Owner', 'Post Time Odds']
Types: ['text', 'text', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1 st', '0', 4.0, 'Curlin', 'Robby Albarado', 'Steve Asmussen', 'Stonestreet Stables', '3.40-1']
SQL:

assistant: SELECT "Owner" FROM "Table" WHERE "Lengths Behind" = '5½';