CREATE TABLE table_39699 ("Call sign" CLOB, "Launched" CLOB, "Transmitting from" CLOB, "Coverage" CLOB, "Languages" CLOB, "Frequency" CLOB)

What is the frequency of the station with a coverage of oaxaca guerrero puebla?
SELECT "Frequency" FROM table_39699 WHERE "Coverage" = 'oaxaca guerrero puebla'
SELECT "Frequency" FROM "table_39699" WHERE "Coverage" = 'oaxaca guerrero puebla'