How many restaurants have more than 4 star reviews?
more than 4 star review refers to review > 4
SELECT COUNT(id_restaurant) AS cnt FROM generalinfo WHERE review > 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, 
