user: Question: Which Rank has a Nation of china (chn), and a Bronze smaller than 4?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['real', 'text', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'Canada (CAN)', 14.0, 7.0, 5.0, 26.0]
SQL:

assistant: SELECT "Rank" FROM "Table" WHERE "Nation" = 'china (chn)' AND "Bronze" < 4.0;