user: Question: How many tries against were there with 17 losses?
Columns: ['Club', 'Played', 'Drawn', 'Lost', 'Points for', 'Points against', 'Tries for', 'Tries against', 'Try bonus', 'Losing bonus']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Club', 'Played', 'Drawn', 'Lost', 'Points for', 'Points against', 'Tries for', 'Tries against', 'Try bonus', 'Losing bonus']
SQL:

assistant: SELECT SUM("Tries against") FROM "Table" WHERE "Lost" = '17';