( ( ( Select ( ( ( a producer ) and ) ( a consumer ) ) ) ( from ( this ( food chain ) ) ) ) . )
(ROOT (NP (NP (NNP Select)) (NP (NP (DT a) (NN producer)) (CC and) (NP (DT a) (NN consumer))) (PP (IN from) (NP (DT this) (NN food) (NN chain))) (. .)))
Select a producer and a consumer from this food chain.
(ROOT (S (NP (NNP Food) (NNS chains)) (VP (VBP carry) (NP (NN energy)) (PP (IN from) (NP (NP (NNS producers)) (PP (TO to) (NP (NNS consumers)))))) (. .)))