user: Question: What is the highest lane for the Poland swimmer who ranked under 6?
Columns: ['Rank', 'Lane', 'Name', 'Nationality', 'Time']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 4.0, 'Liu Zige', 'China', '2:06.25']
SQL:

assistant: SELECT MAX("Lane") FROM "Table" WHERE "Rank" < 6.0 AND "Nationality" = 'Poland';