{HEAD ~ The apparatus} 1, wherein {TAIL ~ the first ad} is a user selected video clip 
wherein
{ HEAD ~ The apparatus } 1 , wherein { TAIL ~ the first ad } is a user selected video clip
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH