Which attraction type does the most tourist attractions belong to? Tell me its  attraction type description and code.
return attractions ;return types of  #1 ;return tourist attractions with #2 ;return number of  #3 for each  #2 ;return #2 where #4 is  highest ;return attraction  type  descriptions of  #5 ;return attraction  type  code of  #5 ;return #6 ,  #7
['select', 'project', 'project', 'group', 'superlative', 'project', 'project', 'union']