user: Question: Name the sum of gross tonnage for Wood on date more tahn 1846 for comissioned and ship of Esk
Columns: ['Ship', 'Date Commissioned', 'Gross Tonnage', 'Propulsion', 'Material']
Types: ['text', 'real', 'real', 'text', 'text']
Sample row: ['Actaeon', 1842.0, 650.0, 'Paddle', 'Wood']
SQL:

assistant: SELECT SUM("Gross Tonnage") FROM "Table" WHERE "Material" = 'Wood' AND "Date Commissioned" > 1846.0 AND "Ship" = 'Esk';