Find the number of adults for the room reserved and checked in by CONRAD SELBIG on Oct 23, 2010.
return CONRAD SELBIG ;return rooms reserved by #1 ;return rooms checked in  by #1 ;return #2 on Oct 23 ,  2010 ;return #3 on Oct 23 ,  2010 ;return rooms in  both #4 and  #5 ;return adults of #6 ;return number of  #7
['select', 'project', 'project', 'filter', 'filter', 'intersection', 'project', 'aggregate']