user: Question: Which country did the Director(s) of Kota Nagaoka come from and win ¥300,000?
Columns: ['Rank', 'Film', 'Director(s)', 'Country', 'Prize']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Grand Prix', 'The Kitchen', 'Ben Ferris', 'Australia', '¥2,000,000']
SQL:

assistant: SELECT "Country" FROM "Table" WHERE "Prize" = '¥300,000' AND "Director(s)" = 'Kota Nagaoka';