The invention also has as its object to provide {TAIL ~ a cheap and operationally reliable apparatus} for performing the process which operates without {HEAD ~ pollution} 
The invention also has as its object to provide { TAIL ~ a cheap and operationally reliable apparatus } for performing the process which operates without { HEAD ~ pollution }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD