user: Question: What's the total L/100km extra urban fueled by diesel, when the mpg-UK combines is more than 19.2, mpg-US is less than 50 and the L/100m combined is less than 5.7?
Columns: ['Manufacturer', 'Transmission', 'Engine Capacity', 'Fuel Type', 'L/100km Urban (Cold)', 'L/100km Extra-Urban', 'L/100km Combined', 'mpg-UK Urban (Cold)', 'mpg-UK Extra-Urban', 'mpg-UK Combined', 'mpg-US Urban', 'mpg-US Extra-Urban', 'mpg-US Combined', 'CO 2 g/km', 'Green Rating']
Types: ['text', 'text', 'real', 'text', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'text']
Sample row: ['Ferrari', 'M6', 4308.0, 'Petrol', 22.9, 10.6, 15.2, 12.3, 26.7, 18.6, 10.2, 22.2, 15.5, 345.0, 'G']
SQL:

assistant: SELECT SUM("L/100km Extra-Urban") FROM "Table" WHERE "mpg-UK Combined" > 19.2 AND "L/100km Combined" < 5.7 AND "Fuel Type" = 'diesel' AND "mpg-US Combined" < 50.0;