Question: Find the the names of the tourist attractions that the tourist named Alison visited but Rosalind did not visit.
SQL: SELECT T1.Name FROM Tourist_Attractions AS T1 JOIN VISITORS AS T2 JOIN VISITS AS T3 ON T1.Tourist_Attraction_ID  =  T3.Tourist_Attraction_ID AND T2.Tourist_ID  =  T3.Tourist_ID WHERE T2.Tourist_Details  =  "Alison" EXCEPT SELECT T1.Name FROM Tourist_Attractions AS T1 JOIN VISITORS AS T2 JOIN VISITS AS T3 ON T1.Tourist_Attraction_ID  =  T3.Tourist_Attraction_ID AND T2.Tourist_ID  =  T3.Tourist_ID WHERE T2.Tourist_Details  =  "Rosalind"