question: How many years after the conquest of the Balearics was the Pisan Liber maiolichinus completed?
#1 return the  conquest of the   Balearics 
#2 return the  Pisan Liber maiolichinus was  completed 
#3 return year of #1 
#4 return year of #2 
#5 return the  difference of #4 and  #3