under the weight of too many story lines 
(ROOT (PP (IN under) (NP (NP (DT the) (NN weight)) (PP (IN of) (NP (ADJP (RB too) (JJ many)) (NN story) (NNS lines))))))
(ROOT (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (ADJP (RB ) (JJ )) (NN ) (NNS ))))))