Table schema:
CREATE TABLE table_name_68 (erp_w VARCHAR, frequency_mhz VARCHAR, city_of_license VARCHAR)

Question: What is the ERP W of a Frequency MHz greater than 89.5 in the city of Washburn, Texas?
SQL: SELECT erp_w FROM table_name_68 WHERE frequency_mhz > 89.5 AND city_of_license = "washburn, texas"