( ( ( The ( synergy principle ) ) ( at ( work ( in ( plants ( , ( pathogens ( , ( insects ( , ( ( herbivors and ) humans ) ) ) ) ) ) ) ) ) ) ) ; )
(ROOT (NP (NP (DT The) (NN synergy) (NN principle)) (PP (IN at) (NP (NP (NN work)) (PP (IN in) (NP (NNS plants) (, ,) (NNS pathogens) (, ,) (NNS insects) (, ,) (NNS herbivors) (CC and) (NNS humans))))) (: ;)))
The synergy principle at work in plants, pathogens, insects, herbivors and humans;
(ROOT (S (NP (NNS Plants)) (VP (VBP face) (NP (NP (CD two) (NNS types)) (PP (IN of) (NP (NNS enemies)))) (: :) (NP (NNS herbivores) (CC and) (NNS pathogens))) (. .)))