A continuous paper web is provided from a source that is {HEAD ~ the first component} of {TAIL ~ such a system} 
of
A continuous paper web is provided from a source that is { HEAD ~ the first component } of { TAIL ~ such a system }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL