CREATE TABLE table_204_779 (id NUMBER, "network name" CLOB, "flagship" CLOB, "programming type" CLOB, "owner" CLOB, "affiliates" NUMBER)

what is the only network owned by national polytechnic institute ?
SELECT "network name" FROM table_204_779 WHERE "owner" = 'national polytechnic institute'
SELECT "network name" FROM "table_204_779" WHERE "owner" = 'national polytechnic institute'