Task: Question Decomposition
Input (English): question: How many years passed between the first attempt to annex Tenerife until the actual conquest began?
Output (English): #1 return the  first attempt to annex Tenerife 
#2 return the  actual conquest began 
#3 return year of #1 
#4 return year of #2 
#5 return difference of #4 and  #3