As shown, the apparatus includes {HEAD ~ a processing system} 1 coupled to {TAIL ~ a database} 2 
coupled to
As shown , the apparatus includes { HEAD ~ a processing system } 1 coupled to { TAIL ~ a database } 2
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH