In {TAIL ~ a further embodiment}, {HEAD ~ at least one line} has more than n straight line segments 
In { TAIL ~ a further embodiment } , { HEAD ~ at least one line } has more than n straight line segments
REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH