Find the names of the tourist attractions that is either accessible by walk or at address 660 Shea Crescent.
return tourist attractions ;return #1 accessible by walk ;return #1 at address 660 Shea Crescent ;return names of  #2 ;return names of  #3 ;return #4 or #5
['select', 'filter', 'filter', 'project', 'project', 'union']