question: How many Dutch died in 1962 at the hands of the Wu-lao-wan before the embargo was put into place?
#1 return Dutch 
#2 return #1 that died in  1962 
#3 return #2 at the  hands of the   Wu-lao-wan 
#4 return #3 before the  embargo was  put into place 
#5 return number of  #4