How many passes did Michael Irvin, Alvin Harper, and Jay Novacek catch combined?
return Michael Irvin ;return Alvin Harper ;return Jay Novacek ;return catches of #1 ;return catches of #2 ;return catches of #3 ;return number of  #4 ;return number of  #5 ;return number of  #6 ;return sum of #7 ,  #8 ,   #9
['select', 'select', 'select', 'project', 'project', 'project', 'aggregate', 'aggregate', 'aggregate', 'arithmetic']