bigger and more ambitious than the first installment 
(ROOT (ADJP (ADJP (ADJP (JJR bigger)) (CC and) (ADJP (RBR more) (JJ ambitious))) (PP (IN than) (NP (DT the) (JJ first) (NN installment)))))
(ROOT (ADJP (ADJP (ADJP (JJR )) (CC ) (ADJP (RBR ) (JJ ))) (PP (IN ) (NP (DT ) (JJ ) (NN )))))