How many more yards Jerry Rice have than the leading rusher and second-leading rusher combined?
return Jerry Rice ;return yards of #1 ;return rushers ;return yards of #3 ;return the  highest of #4 ;return #4 besides  #5 ;return the  highest of #6 ;return sum of #5 and  #7 ;return the  difference of #2 and  #8
['select', 'project', 'select', 'project', 'aggregate', 'discard', 'aggregate', 'arithmetic', 'arithmetic']