in search of purpose or even a plot 
(ROOT (PP (IN in) (NP (NP (NN search)) (PP (IN of) (NP (NP (NN purpose)) (CC or) (NP (RB even) (DT a) (NN plot)))))))
(ROOT (PP (IN ) (NP (NP (NN )) (PP (IN ) (NP (NP (NN )) (CC ) (NP (RB ) (DT ) (NN )))))))