user: Question: Name the period for South Korea with peak position of #1
Columns: ['Country', 'Chart', 'Period', 'Peak position', 'Sales']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['South Korea', 'Monthly Chart', 'July 2006', '#16', '161,452']
SQL:

assistant: SELECT "Period" FROM "Table" WHERE "Country" = 'South Korea' AND "Peak position" = '#1';