user: Question: What is the frequency of WMAD?
Columns: ['Call Letters', 'Market', 'Frequency', 'AOR Years', 'Current Format']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['KZRR', 'Albuquerque, NM', '94.1 FM', '1980–present', 'AOR']
SQL:

assistant: SELECT "Frequency" FROM "Table" WHERE "Call Letters" = 'WMAD';