Who died 8 years after the death of the mother of Laestadius, his dad or brother Petrus?
return the  death of the mother of  Laestadius ;return the  death of the dad of  Laestadius ;return the  death of Petrus ;return year of #1 ;return year of #2 ;return year of #3 ;return the  difference of #5 and  #4 ;return the  difference of #6 and  #4 ;return if #7 is equal to 8 ;return if #8 is equal to 8 ;return which is true of #9 ,  #10
['select', 'select', 'select', 'project', 'project', 'project', 'arithmetic', 'arithmetic', 'boolean', 'boolean', 'comparison']