The spent solvent is contacted with water to form decaffeinated spent {HEAD ~ solvent} and caffeine containing {TAIL ~ spent water} 
The spent solvent is contacted with water to form decaffeinated spent { HEAD ~ solvent } and caffeine containing { TAIL ~ spent water }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL