CREATE TABLE table_16598 ("No." FLOAT, "Episode" TEXT, "Air Date" TEXT, "Timeslot" TEXT, "Rating" TEXT, "Share" TEXT, "18\\u201349  ( Rating/Share ) " TEXT, "Viewers  ( m ) " TEXT, "Rank  ( # ) " TEXT)

What was the timeslot for the episode that aired on May 12, 2009?
SELECT "Timeslot" FROM table_16598 WHERE "Air Date" = 'May 12, 2009'
SELECT "Timeslot" FROM "table_16598" WHERE "Air Date" = 'May 12, 2009'