CREATE TABLE table_77846 ("Episode" CLOB, "Air Date" CLOB, "Timeslot" CLOB, "Rating" CLOB, "Share" CLOB, "18\\u201349  ( Rating/Share ) " CLOB, "Viewers  ( m ) " FLOAT, "Rank  ( # ) " CLOB)

What is the rank for the show aired on May 19, 2009?
SELECT "Rank (#)" FROM table_77846 WHERE "Air Date" = 'may 19, 2009'
SELECT "Rank (#)" FROM "table_77846" WHERE "Air Date" = 'may 19, 2009'