CREATE TABLE table_204_903 (id DECIMAL, "title" TEXT, "character" TEXT, "broadcaster" TEXT, "episodes" DECIMAL, "date" DECIMAL)

which broadcaster hosted 3 titles but they had only 1 episode ?
SELECT "broadcaster" FROM table_204_903 WHERE "episodes" = 1 GROUP BY "broadcaster" HAVING COUNT(*) = 3
SELECT "broadcaster" FROM "table_204_903" WHERE "episodes" = 1 GROUP BY "broadcaster" HAVING COUNT(*) = 3