Table: fuel_econ_uk_may08
Columns: manufacturer
model
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

Question: Which Fuel Type that has a mpg-US Extra-Urban larger than 53.5, and a mpg-US Combined larger than 50 from renault?
SQL: SELECT "fuel_type" FROM fuel_econ_uk_may08 WHERE "mpg_us_extra_urban" > 53.5 AND "mpg_us_combined" > 50 AND "manufacturer" = 'renault'