( ( Vocabulary ( activation ( energy ( anabolic ( reaction ( biochemical ( reaction ( catabolic ( reaction ( endothermic ( reaction ( enzyme ( exothermic ( reaction ( metabolism ( product ( react ant ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ( ( Introduction ( ( ( The ( element chlorine ) ) ( -LRB- ( CI -RRB- ) ) ) ( is ( a ( greenish poison ) ) ) ) ) . ) )
(ROOT (S (NP (NN Vocabulary) (NN activation) (NN energy) (NN anabolic) (NN reaction) (NN biochemical) (NN reaction) (NN catabolic) (NN reaction) (NN endothermic) (NN reaction) (NN enzyme) (NN exothermic) (NN reaction) (NN metabolism) (NN product) (NNS react) (NX (NNP ant))) (VP (VBD Introduction) (SBAR (S (NP (NP (DT The) (NN element) (NN chlorine)) (PRN (-LRB- -LRB-) (NP (NNP CI)) (-RRB- -RRB-))) (VP (VBZ is) (NP (DT a) (ADJP (JJ greenish)) (NN poison)))))) (. .)))
Vocabulary   activation energy  anabolic reaction  biochemical reaction  catabolic reaction  endothermic reaction  enzyme   exothermic reaction  metabolism  product  react ant     Introduction   The element chlorine (CI) is a greenish poison.
(ROOT (S (NP (NNP Metabolism)) (VP (VBZ includes) (NP (ADJP (DT both) (JJ anabolic) (CC and) (JJ catabolic)) (NNS reactions))) (. .)))