If the transformed remote query element is pushdownable, {TAIL ~ the system} adds {HEAD ~ the transformed remote query element} to a transformed inexact query output 
If the transformed remote query element is pushdownable , { TAIL ~ the system } adds { HEAD ~ the transformed remote query element } to a transformed inexact query output
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH