user: Question: What's the population that has a median family income of $50,553?
Columns: ['County', 'Per capita income', 'Median household income', 'Median family income', 'Population', 'Number of households']
Types: ['text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['Loving', '$42,220', '$83,889', '$84,306', 82.0, 39.0]
SQL:

assistant: SELECT "Population" FROM "Table" WHERE "Median family income" = '$50,553';