{HEAD ~ Roast coffee extract} is contacted with {TAIL ~ a water immiscible organic solvent} to form decaffeinated extract and caffeine containing spent solvent 
is contacted with
{ HEAD ~ Roast coffee extract } is contacted with { TAIL ~ a water immiscible organic solvent } to form decaffeinated extract and caffeine containing spent solvent
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH