What types of food are served at the 4 top-reviewed restaurants?
top-reviewed refers to review = 4; type of food refers to food_type


SELECT food_type FROM generalinfo WHERE review = ( SELECT MAX(review) FROM generalinfo ) LIMIT 4
database name:db_id restaurant
geographic table geographic Cols: city dtype text, country dtype text, region dtype text, 
generalinfo table generalinfo Cols: id restaurant dtype integer, label dtype text, food type dtype text, city dtype text, review dtype real, 
location table location Cols: id restaurant dtype integer, street number dtype integer, street name dtype text, city dtype text, 
