user: Question: What is the area in kilometers squared the population density is 137.61?
Columns: ['Name', 'Population (2002 census)', 'Population (2007 estimation)', 'Population (2011 census)', 'Area (km²)', 'Density (pop/km²)']
Types: ['text', 'real', 'real', 'real', 'text', 'text']
Sample row: ['Braşov', 283901.0, 277945.0, 253200.0, '267.32', '1,204']
SQL:

assistant: SELECT "Area (km²)" FROM "Table" WHERE "Density (pop/km²)" = '137.61';