For example, {HEAD ~ a bio catalytic process} such as {TAIL ~ a Fischer Tropsch process} could be used to produce the Ethanol 
For example , { HEAD ~ a bio catalytic process } such as { TAIL ~ a Fischer Tropsch process } could be used to produce the Ethanol
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH