In the event that {TAIL ~ the presence} of the television commercial is not identified, {HEAD ~ the television commercial detector} can provide an error indication that can be displayed on a display device  
In the event that { TAIL ~ the presence } of the television commercial is not identified , { HEAD ~ the television commercial detector } can provide an error indication that can be displayed on a display device
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH