the working out of the plot almost arbitrary 
(ROOT (S (NP (NP (DT the) (NN working)) (PP (IN out) (PP (IN of) (NP (DT the) (NN plot))))) (ADJP (RB almost) (JJ arbitrary))))
(ROOT (S (NP (NP (DT ) (NN )) (PP (IN ) (PP (IN ) (NP (DT ) (NN ))))) (ADJP (RB ) (JJ ))))