{HEAD ~ The present inventors} have studied {TAIL ~ various investigations} to solve the problems and, as a result, found that the above problems can be solved by correlating a plurality of lines of the treatment facilities as a specific structure respectively, and have thus completed the present invention 
studied
{ HEAD ~ The present inventors } have studied { TAIL ~ various investigations } to solve the problems and , as a result , found that the above problems can be solved by correlating a plurality of lines of the treatment facilities as a specific structure respectively , and have thus completed the present invention
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