In other words, it is {HEAD ~ an object} of {TAIL ~ the present invention} to remove contaminants or eliminate any bad smell of various contaminated materials 
of
In other words , it is { HEAD ~ an object } of { TAIL ~ the present invention } to remove contaminants or eliminate any bad smell of various contaminated materials
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH