Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What's the 18-49 (rating/share) of the episode that originally aired on May 5, 2009?

### Inputs:
table_name: table, columns: ['No.', 'Episode', 'Air Date', 'Timeslot', 'Rating', 'Share', '18–49 (Rating/Share)', 'Viewers (m)', 'Rank (#)']

### Response:
SELECT 18–49 (Rating/Share) FROM table WHERE Air Date = May 5, 2009