user: Question: What was the original air date of the episode that had 5.42 million viewers?
Columns: ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'Original air date', 'U.S. viewers (million)']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: [37.0, 1.0, '"She\'s Not There"', 'Michael Lehmann', 'Alexander Woo', 'June26,2011', '5.42']
SQL:

assistant: SELECT "Original air date" FROM "Table" WHERE "U.S. viewers (million)" = '5.42';