( ( In ( this ( food chain ) ) ) ( , ( energy ( ( ( flows ( from ( ( ( the grass ) ( -LRB- ( producer -RRB- ) ) ) ( to ( ( the deer ) ( -LRB- ( ( primary consumer ) -RRB- ) ) ) ) ) ) ) ( to ( ( the tiger ) ( -LRB- ( ( secondary consumer ) -RRB- ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (DT this) (NN food) (NN chain))) (, ,) (NP (NN energy)) (VP (VBZ flows) (PP (IN from) (NP (NP (NP (DT the) (NN grass)) (PRN (-LRB- -LRB-) (NP (NN producer)) (-RRB- -RRB-))) (PP (TO to) (NP (NP (DT the) (NNS deer)) (PRN (-LRB- -LRB-) (NP (JJ primary) (NN consumer)) (-RRB- -RRB-)))))) (PP (TO to) (NP (NP (DT the) (NN tiger)) (PRN (-LRB- -LRB-) (NP (JJ secondary) (NN consumer)) (-RRB- -RRB-))))) (. .)))
In this food chain, energy flows from the grass (producer) to the deer (primary consumer) to the tiger (secondary consumer).
(ROOT (S (NP (NP (DT A) (NN consumer) (CC and) (NN producer)) (PP (IN in) (NP (DT a) (NN food) (NN chain)))) (VP (VBP are) (VP (VBN involved) (SBAR (WHADVP (WRB when)) (S (NP (DT a) (NNS deer)) (VP (VBZ eats) (NP (DT a) (NN leaf))))))) (. .)))