( This ( ( is ( ( an ( oxidation-reduction reaction ) ) ( wherein ( ( element A ) ( is ( ( reduced ( from ( the ( elemental form ) ) ) ) ( into ( ( an ( ( anion and ) element ) ) ( Y ( is ( ( oxidized ( from ( an anion ) ) ) ( into ( the ( elemental form ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This)) (VP (VBZ is) (NP (NP (DT an) (JJ oxidation-reduction) (NN reaction)) (SBAR (WHADVP (WRB wherein)) (S (NP (NN element) (NN A)) (VP (VBZ is) (VP (VBN reduced) (PP (IN from) (NP (DT the) (JJ elemental) (NN form))) (PP (IN into) (NP (NP (DT an) (NN anion) (CC and) (NN element)) (SBAR (S (NP (NNP Y)) (VP (VBZ is) (VP (VBN oxidized) (PP (IN from) (NP (DT an) (NN anion))) (PP (IN into) (NP (DT the) (JJ elemental) (NN form))))))))))))))) (. .)))
This is an oxidation-reduction reaction wherein element A is reduced from the elemental form into an anion and element Y is oxidized from an anion into the elemental form.
(ROOT (S (NP (DT A) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN anion)) (VP (VBZ is) (VP (VBN formed) (SBAR (WHADVP (WRB when)) (S (NP (DT an) (NN element)) (VP (VBZ gains) (NP (QP (CD one) (CC or) (JJR more)) (NNS electrons))))))) (. .)))