no new plot conceptions or environmental changes 
(ROOT (NP (NP (DT no) (JJ new) (NN plot) (NNS conceptions)) (CC or) (NP (JJ environmental) (NNS changes))))
(ROOT (NP (NP (DT ) (JJ ) (NN ) (NNS )) (CC ) (NP (JJ ) (NNS ))))