The present invention provides {HEAD ~ a process} for making {TAIL ~ an olefin product} from an oxygenate feedstock which comprises: 
for making
The present invention provides { HEAD ~ a process } for making { TAIL ~ an olefin product } from an oxygenate feedstock which comprises :
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH