user: Question: What is the frequency MHz in Tremonton, Utah with a ERP W larger than 30?
Columns: ['Call sign', 'Frequency MHz', 'City of license', 'ERP W', 'FCC info']
Types: ['text', 'real', 'text', 'real', 'text']
Sample row: ['K272AX', 102.3, 'Garden City, Utah', 30.0, 'FCC']
SQL:

assistant: SELECT "Frequency MHz" FROM "Table" WHERE "ERP W" > 30.0 AND "City of license" = 'Tremonton, Utah';