user: Question: What is the lowest value for Perth, when Melbourne is greater than 461000, and when Sydney is less than 430000?
Columns: ['Episode number Production number', 'Title', 'Sydney', 'Melbourne', 'Brisbane', 'Adelaide', 'Perth', 'TOTAL', 'WEEKLY RANK', 'NIGHTLY RANK']
Types: ['text', 'text', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: ['14 2-01', 'The Dogs of War', 407000.0, 327000.0, 227000.0, 144000.0, 142000.0, 1247000.0, 21.0, 7.0]
SQL:

assistant: SELECT MIN("Perth") FROM "Table" WHERE "Melbourne" > 461000.0 AND "Sydney" < 430000.0;