has n't been worth caring about 
(ROOT (S (VP (VBZ has) (RB n't) (VP (VBN been) (ADJP (JJ worth) (S (VP (VBG caring) (PP (IN about)))))))))
(ROOT (S (VP (VBZ ) (RB ) (VP (VBN ) (ADJP (JJ ) (S (VP (VBG ) (PP (IN )))))))))