that 's better than its predecessor 
(ROOT (S (NP (DT that)) (VP (VBZ 's) (ADJP (ADJP (JJR better)) (PP (IN than) (NP (PRP$ its) (NN predecessor)))))))
(ROOT (S (NP (DT )) (VP (VBZ ) (ADJP (ADJP (JJR )) (PP (IN ) (NP (PRP$ ) (NN )))))))