is about as deep as that sentiment 
(ROOT (VP (VBZ is) (ADJP (ADJP (RB about) (RB as) (JJ deep)) (PP (IN as) (NP (DT that) (NN sentiment))))))
(ROOT (VP (VBZ ) (ADJP (ADJP (RB ) (RB ) (JJ )) (PP (IN ) (NP (DT ) (NN ))))))