apart by forming a chain of relationships that come full circle to end on a positive ( if tragic ) note 
(ROOT (PP (ADVP (RB apart)) (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 (PP (ADVP (RB )) (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 ))))))))))))))