CREATE TABLE table_35899 ("Order" FLOAT, "Episode" TEXT, "Air Date" TEXT, "U.S. Timeslot  ( EST ) " TEXT, "18-49" FLOAT, "Viewers" FLOAT)

What is the episode name that aired on July 23, 2009 with more than 3.31 viewers?
SELECT "Episode" FROM table_35899 WHERE "Air Date" = 'july 23, 2009' AND "Viewers" > '3.31'
SELECT "Episode" FROM "table_35899" WHERE "Air Date" = 'july 23, 2009' AND "Viewers" > '3.31'