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