user: Question: How many figures are there for density for Yucheng County?
Columns: ['English Name', 'Simplified', 'Traditional', 'Pinyin', 'Area', 'Population', 'Density']
Types: ['text', 'text', 'text', 'text', 'real', 'real', 'real']
Sample row: ['Liangyuan District', '梁园区', '梁園區', 'Liángyuán Qū', 673.0, 787931.0, 1171.0]
SQL:

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