CREATE TABLE table_name_76 (city_of_license VARCHAR(255), frequency_mhz VARCHAR(255), erp_w VARCHAR(255), class VARCHAR(255))
What city of license has an ERP W smaller than 500, Class A, and Frequency MHz larger than 89.7?
    
SQL: SELECT city_of_license FROM table_name_76 WHERE erp_w < 500 AND class = "a" AND frequency_mhz > 89.7