CREATE TABLE table_77847 ("Episode" CLOB, "Air Date" CLOB, "Timeslot" CLOB, "Rating" CLOB, "Share" CLOB, "18\\u201349  ( Rating/Share ) " CLOB, "Viewers  ( m ) " FLOAT, "Rank  ( # ) " CLOB)

What is the timeslot for the episode that aired April 28, 2009?
SELECT "Timeslot" FROM table_77847 WHERE "Air Date" = 'april 28, 2009'
SELECT "Timeslot" FROM "table_77847" WHERE "Air Date" = 'april 28, 2009'