a sea of visual and verbal clichés 
(ROOT (NP (NP (DT a) (NN sea)) (PP (IN of) (NP (ADJP (JJ visual) (CC and) (JJ verbal)) (NNS clichés)))))
(ROOT (NP (NP (DT ) (NN )) (PP (IN ) (NP (ADJP (JJ ) (CC ) (JJ )) (NNS )))))