CREATE TABLE table_63187 ("City of license" CLOB, "Identifier" CLOB, "Frequency" CLOB, "Power" CLOB, "Class" CLOB, "RECNet" CLOB)

What's the frequency when the identifier is cbf-fm-14 having a class of A?
SELECT "Frequency" FROM table_63187 WHERE "Class" = 'a' AND "Identifier" = 'cbf-fm-14'
SELECT "Frequency" FROM "table_63187" WHERE "Class" = 'a' AND "Identifier" = 'cbf-fm-14'