user: Question: What is North American Release Date, when Japanese Release Date is "2011-06-23"?
Columns: ['Series', 'Platform', 'Japanese Release Date', 'North American Release Date', 'European Release Date', 'Australia Release Date']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Salburg', 'PlayStation', '1997-05-23', '—', '—', '—']
SQL:

assistant: SELECT "North American Release Date" FROM "Table" WHERE "Japanese Release Date" = '2011-06-23';