CREATE TABLE table_40244 ("Call sign" CLOB, "Frequency MHz" CLOB, "City of license" CLOB, "ERP W" FLOAT, "FCC info" CLOB)

What call sign has ERP W greater than 197?
SELECT "Call sign" FROM table_40244 WHERE "ERP W" > '197'
SELECT "Call sign" FROM "table_40244" WHERE "ERP W" > '197'