user: Question: What is the range for married filing separately in which the head of household is $117,451–$190,200?
Columns: ['Marginal Ordinary Income Tax Rate', 'Single', 'Married Filing Jointly or Qualified Widow(er)', 'Married Filing Separately', 'Head of Household']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['10%', '$0–$8,350', '$0–$16,700', '$0–$8,350', '$0–$11,950']
SQL:

assistant: SELECT "Married Filing Separately" FROM "Table" WHERE "Head of Household" = '$117,451–$190,200';