Database: warehouse_1
Question: What are the locations of warehouses that have boxes containing Rocks but not Scissors?
SQL:
SELECT T2.location FROM boxes AS T1 JOIN warehouses AS T2 ON T1.warehouse  =  T2.code WHERE T1.contents  =  'Rocks' EXCEPT SELECT T2.location FROM boxes AS T1 JOIN warehouses AS T2 ON T1.warehouse  =  T2.code WHERE T1.contents  =  'Scissors'