user: Question: How many losses does the club with 539 points for have?
Columns: ['Club', 'Played', 'Won', 'Drawn', 'Lost', 'Points for', 'Points against', 'Points difference', 'Points']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Club', 'Played', 'Won', 'Drawn', 'Lost', 'Points for', 'Points against', 'Points difference', 'Points']
SQL:

assistant: SELECT "Lost" FROM "Table" WHERE "Points for" = '539';