CREATE TABLE table_67881 ("7:00" TEXT, "7:30" TEXT, "8:00" TEXT, "8:30" TEXT, "9:00" TEXT, "9:30" TEXT, "10:00" TEXT)

What is on tv at 9:30 on the same channel that had e2 on at 7:30?
SELECT "9:30" FROM table_67881 WHERE "7:30" = 'e2'
SELECT "9:30" FROM "table_67881" WHERE "7:30" = 'e2'