How many problems does the product with the most problems have? List the number of the problems and product name.
return products ;return problems  of  #1 ;return number of  #2 for each  #1 ;return #1 where  #3 is highest ;return problems  of  #4 ;return number of  #5 ;return product  name of  #4 ;return #6 ,  #7
['select', 'project', 'group', 'superlative', 'project', 'aggregate', 'project', 'union']