user: Question: For End of Fiscal Year(s) with as % of GDP (Treas/MW, OMB or OMB/MW) of 28 and Gross Debt in $Billions undeflated Treas. smaller than 370.9 what would be the sum of Debt Held By Public ($Billions)?
Columns: ['End of Fiscal Year', 'Gross Debt in $Billions undeflated Treas.', 'as % of GDP Low-High', 'Debt Held By Public ($Billions)', 'as % of GDP (Treas/MW, OMB or OMB/MW)', 'GDP $Billions OMB/BEA est.=MW.com']
Types: ['real', 'real', 'text', 'real', 'real', 'text']
Sample row: [1910.0, 2.653, '8.0', 2.653, 8.0, 'est. 32.8']
SQL:

assistant: SELECT SUM("Debt Held By Public ($Billions)") FROM "Table" WHERE "as % of GDP (Treas/MW, OMB or OMB/MW)" = 28.0 AND "Gross Debt in $Billions undeflated Treas." < 370.9;