CREATE TABLE table_19384 ("Country" CLOB, "Local Name" CLOB, "Host" CLOB, "Channel" CLOB, "Year Aired" CLOB, "Top Prize" CLOB)

How many hosts were on Seven Network?
SELECT COUNT("Host") FROM table_19384 WHERE "Channel" = 'Seven Network'
SELECT COUNT("Host") FROM "table_19384" WHERE "Channel" = 'Seven Network'