user: Question: What Main Location(s) has an Area of 19,800 ha?
Columns: ['Crop', 'Area', 'Output (2007)', '% of national', 'Main location(s)']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Cotton', '1900 ha', '2000 t', '12.4%', 'Bắc Bình (E)']
SQL:

assistant: SELECT "Main location(s)" FROM "Table" WHERE "Area" = '19,800 ha';