user: Question: Tell me the sum of cap/hor for double chair and vertical less than 479
Columns: ['Lift Name', 'Type', 'Length', 'Vertical', 'Cap./Hour']
Types: ['text', 'text', 'real', 'real', 'real']
Sample row: ['Chair 1', 'Double Chair', 3792.0, 479.0, 1200.0]
SQL:

assistant: SELECT SUM("Cap./Hour") FROM "Table" WHERE "Type" = 'double chair' AND "Vertical" < 479.0;