CREATE TABLE table_69061 ("Call sign" CLOB, "Frequency MHz" FLOAT, "City of license" CLOB, "ERP W" CLOB, "Class" CLOB, "FCC info" CLOB)

Which ERP W has a Class of A, and a Call sign of wffc?
SELECT "ERP W" FROM table_69061 WHERE "Class" = 'a' AND "Call sign" = 'wffc'
SELECT "ERP W" FROM "table_69061" WHERE "Call sign" = 'wffc' AND "Class" = 'a'