user: Question: What is the total work number of gowrie with a 0-6-4t type after 1908?
Columns: ['Name', 'Builder', 'Type', 'Date', 'Works number']
Types: ['text', 'text', 'text', 'real', 'real']
Sample row: ['Snowdon Ranger', 'Vulcan Foundry', '0-6-4T', 1875.0, 739.0]
SQL:

assistant: SELECT SUM("Works number") FROM "Table" WHERE "Type" = '0-6-4t' AND "Name" = 'gowrie' AND "Date" > 1908.0;