How many is the difference in the number of yards of Bush's TD run and the number of yards of the pass to Meachem?
return Bush ;return TD run of   #1 ;return yards  of   #2 ;return Meachem ;return pass to #4 ;return yards  of   #5 ;return difference of   #3 and  #6
['select', 'project', 'project', 'select', 'project', 'project', 'arithmetic']