( ( Consumer organisms ) ( ( ( ( depend upon ) and ) ( ( eat ( other organisms ) ) ( for ( their food ) ) ) ) . ) )
(ROOT (S (NP (NN Consumer) (NNS organisms)) (VP (VP (VBP depend) (PP (RB upon))) (CC and) (VP (VBP eat) (NP (JJ other) (NNS organisms)) (PP (IN for) (NP (PRP$ their) (NN food))))) (. .)))
Consumer organisms depend upon and eat other organisms for their                   food.
(ROOT (S (NP (NP (NNS Organisms)) (SBAR (WHNP (WDT that)) (S (VP (VBP depend) (PP (IN on) (NP (NP (JJ other) (NNS organisms)) (PP (IN for) (NP (NN food))))))))) (VP (VBP play) (NP (NP (DT the) (NN role)) (PP (IN of) (NP (NP (DT a) (NN consumer)) (PP (IN in) (NP (DT the) (NN food) (NN chain))))))) (. .)))