user: Question: What points has 18 for the played and Bala RFC as the club?
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 "Points for" FROM "Table" WHERE "Played" = '18' AND "Club" = 'Bala RFC';