{TAIL ~ The process} 7, wherein the first metal oxide and {HEAD ~ the second metal oxide} comprise the same metal oxide 
{ TAIL ~ The process } 7 , wherein the first metal oxide and { HEAD ~ the second metal oxide } comprise the same metal oxide
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH