How many Dutch died in 1962 at the hands of the Wu-lao-wan before the embargo was put into place?
return Dutch ;return #1 that died in  1962 ;return #2 at the  hands of the   Wu-lao-wan ;return #3 before the  embargo was  put into place ;return number of  #4
['select', 'filter', 'filter', 'filter', 'aggregate']