human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Episode, Air Date, Timeslot, Rating, Share, 18–49 (Rating/Share), Viewers (m), Rank (#)
###Question: What is the rank for the show aired on May 19, 2009?
gpt
SELECT Rank (#) FROM table WHERE Air Date = may 19, 2009