user: Question: What is the average L/100km urban value having an L/100km extraurban under 7.2, mpg combined in the UK under 39.8, l/100km combined over 7.9, and mpg combined in the US under 25.1?
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: ['Toyota', 'Multi5', 998.0, 'Petrol', 5.5, 4.1, 4.6, 51.4, 68.9, 61.4, 42.8, 57.4, 51.1, 109.0, 'B']
SQL:

assistant: SELECT AVG("L/100km Urban (Cold)") FROM "Table" WHERE "L/100km Extra-Urban" < 7.2 AND "mpg-UK Combined" < 39.8 AND "L/100km Combined" > 7.9 AND "mpg-US Combined" < 25.1;