CREATE TABLE "regular_and_capital_gains_tax_rates_for_" (
  "marginal_ordinary_income_tax_rate" text,
  "single" text,
  "married_filing_jointly_or_qualified_widow_er" text,
  "married_filing_separately" text,
  "head_of_household" text
);

Question: Name the head of household for married filing jointly or qualified widow(er) being $137,051–$208,850
SQL: SELECT "head_of_household" FROM "regular_and_capital_gains_tax_rates_for_" WHERE "married_filing_jointly_or_qualified_widow_er"='$137,051–$208,850';

Question: Name the married filing jointly or qualified widow(er) with head of household being $117,451–$190,200
SQL: SELECT "married_filing_jointly_or_qualified_widow_er" FROM "regular_and_capital_gains_tax_rates_for_" WHERE "head_of_household"='$117,451–$190,200';

Question: Name the married filing separately for single of $0–$8,350
SQL: SELECT "married_filing_separately" FROM "regular_and_capital_gains_tax_rates_for_" WHERE "single"='$0–$8,350';

Question: Name the head of household that has married filing separately of $104,426–$186,475
SQL: SELECT "head_of_household" FROM "regular_and_capital_gains_tax_rates_for_" WHERE "married_filing_separately"='$104,426–$186,475';

Question: Name the marginal ordinary income tax rate that has a head of household of $372,951+
SQL: SELECT "marginal_ordinary_income_tax_rate" FROM "regular_and_capital_gains_tax_rates_for_" WHERE "head_of_household"='$372,951+';