According to {TAIL ~ exemplary embodiments}, {HEAD ~ a device} for air sifting is provided for splitting up the remaining fraction 
According to { TAIL ~ exemplary embodiments } , { HEAD ~ a device } for air sifting is provided for splitting up the remaining fraction
REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH