how many buttercup kitchen are there in san francisco ?
SELECT COUNT ( * ) FROM restaurant AS t1 JOIN LOCATION AS t2 ON t1.id  =  t2.restaurant_id WHERE t2.city_name  =  "san francisco" AND t1.name  =  "buttercup kitchen";
SELECT COUNT ( * ) FROM restaurant AS t1 JOIN LOCATION AS t2 ON t1.id  =  t2.restaurant_id WHERE t2.city_name  =  "san francisco" AND t1.name  =  "buttercup kitchen";
[{'COUNT ( * )': 0}]