feels strangely hollow at its emotional core 
(ROOT (S (VP (VBZ feels) (ADJP (RB strangely) (JJ hollow)) (PP (IN at) (NP (PRP$ its) (JJ emotional) (NN core))))))
(ROOT (S (VP (VBZ ) (ADJP (RB ) (JJ )) (PP (IN ) (NP (PRP$ ) (JJ ) (NN ))))))