user: Question: Which Frequency has a Facility ID of 13598?
Columns: ['Call sign', 'Frequency', 'City of license', 'Facility ID', 'ERP / Power W', 'Height m ( ft )', 'Class']
Types: ['text', 'text', 'text', 'real', 'real', 'text', 'text']
Sample row: ['WAIC', '91.9 FM', 'Springfield, MA', 1749.0, 230.0, 'm (ft)', 'B1']
SQL:

assistant: SELECT "Frequency" FROM "Table" WHERE "Facility ID" = 13598.0;