sets itself apart by forming a chain of relationships that come full circle to end on a positive ( if tragic ) note 
(ROOT (VP (VBZ sets) (NP (PRP itself)) (ADVP (RB apart)) (PP (IN by) (S (VP (VBG forming) (NP (NP (NP (DT a) (NN chain)) (PP (IN of) (NP (NNS relationships)))) (SBAR (WHNP (WDT that)) (S (VP (VBP come) (NP (JJ full) (NN circle)) (S (VP (TO to) (VP (VB end) (PP (IN on) (NP (DT a) (ADJP (JJ positive) (-LRB- -LRB-) (SBAR (IN if) (FRAG (ADJP (JJ tragic)))) (-RRB- -RRB-)) (NN note)))))))))))))))
(ROOT (VP (VBZ ) (NP (PRP )) (ADVP (RB )) (PP (IN ) (S (VP (VBG ) (NP (NP (NP (DT ) (NN )) (PP (IN ) (NP (NNS )))) (SBAR (WHNP (WDT )) (S (VP (VBP ) (NP (JJ ) (NN )) (S (VP (TO ) (VP (VB ) (PP (IN ) (NP (DT ) (ADJP (JJ ) (-LRB- ) (SBAR (IN ) (FRAG (ADJP (JJ )))) (-RRB- )) (NN )))))))))))))))