question: How many years passed between Addis's death and the revival of the play "Fear and Loathing in Las Vegas" for the Vault Fringe Festival?
#1 return Addis 's death 
#2 return the  revival of the   play Fear and  Loathing in  Las Vegas for the Vault Fringe Festival 
#3 return year of #1 
#4 return year of #2 
#5 return the  difference of #4 and  #3