user: Question: What is the density of Yushan County?
Columns: ['English Name', 'Simplified', 'Traditional', 'Pinyin', 'Area', 'Population', 'Density']
Types: ['text', 'text', 'text', 'text', 'real', 'real', 'real']
Sample row: ['Xinzhou District', '信州区', '信州區', 'Xìnzhōu Qū', 339.0, 416219.0, 1228.0]
SQL:

assistant: SELECT "Density" FROM "Table" WHERE "English Name" = 'Yushan County';