question_text: How many more spectators were at Old Trafford in 1986 for the first test of the Kangaroo tour of Great Britain and France than the 1989 World Cup Challenege?
decomposition: return spectators that were at Old Trafford in  1986 for the  first test of the   Kangaroo tour of  Great Britain and  France ;return spectators that were at the  1989 World Cup Challenege ;return number of  #1 ;return number of  #2 ;return the  difference of #3 and  #4