Find the the names of the tourist attractions that the tourist named Alison visited but Rosalind did not visit.
return tourist  attractions ;return tourists that  visited #1 ;return #1 where  #2 is  Alison ;return #1 where  #2 is  Rosalind ;return #3 besides #4 ;return names of  #5
['select', 'project', 'comparative', 'comparative', 'discard', 'project']