user: Question: What is the ERP W of a Frequency MHz greater than 89.5 in the city of Washburn, Texas?
Columns: ['Call sign', 'Frequency MHz', 'City of license', 'ERP W', 'Class', 'FCC info']
Types: ['text', 'real', 'text', 'real', 'text', 'text']
Sample row: ['K208CL', 89.5, 'Tribune, Kansas', 250.0, 'D', 'FCC']
SQL:

assistant: SELECT "ERP W" FROM "Table" WHERE "Frequency MHz" > 89.5 AND "City of license" = 'Washburn, Texas';