CREATE TABLE table_48780 ("Title" CLOB, "Season" FLOAT, "Director" CLOB, "Teleplay" CLOB, "First Broadcast" CLOB)

What is Teleplay, when First Broadcast is April 10, 1981?
SELECT "Teleplay" FROM table_48780 WHERE "First Broadcast" = 'april 10, 1981'
SELECT "Teleplay" FROM "table_48780" WHERE "First Broadcast" = 'april 10, 1981'