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