more dimensional and complex than its sunny disposition 
(ROOT (ADJP (ADJP (RBR more) (JJ dimensional) (CC and) (JJ complex)) (PP (IN than) (NP (PRP$ its) (JJ sunny) (NN disposition)))))
(ROOT (ADJP (ADJP (RBR ) (JJ ) (CC ) (JJ )) (PP (IN ) (NP (PRP$ ) (JJ ) (NN )))))