user: Question: Name the sum of year for engine of BRM P202 3.0 V12 BRM P200 3.0 V12
Columns: ['Year', 'Chassis', 'Engine(s)', 'Tyres', 'Points']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1951.0, 'BRM 15', 'BRM P15 1.5 V16 s', 'D', 'n/a 1']
SQL:

assistant: SELECT SUM("Year") FROM "Table" WHERE "Engine(s)" = 'BRM P202 3.0 V12 BRM P200 3.0 V12';