In other words, the judgment is made on {TAIL ~ the type} of {HEAD ~ the received document data} in this step 
In other words , the judgment is made on { TAIL ~ the type } of { HEAD ~ the received document data } in this step
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH