user: Question: What is the sum of Total Regions that have the Year 1954, and a Nebo greater than 447?
Columns: ['Year', 'Total Region', 'Belyando', 'Broadsound', 'Nebo']
Types: ['real', 'real', 'real', 'real', 'real']
Sample row: [1933.0, 4971.0, 2987.0, 1590.0, 394.0]
SQL:

assistant: SELECT SUM("Total Region") FROM "Table" WHERE "Year" = 1954.0 AND "Nebo" > 447.0;