( ( As ( mentioned ( on p. ) ) ) ( ( 183 Hydrogen ) ( ( is ( the ( ( most abundant ) element ) ) ) . ) ) )
(ROOT (S (SBAR (IN As) (S (VP (VBN mentioned) (PP (IN on) (NP (NN p.)))))) (NP (NNP 183) (NNP Hydrogen)) (VP (VBZ is) (NP (DT the) (ADJP (RBS most) (JJ abundant)) (NN element))) (. .)))
As mentioned on p. 183 Hydrogen is the most abundant element.
(ROOT (S (NP (DT The) (NN element) (NN hydrogen)) (VP (VBZ is) (NP (NP (DT the) (RBS most) (JJ abundant)) (PP (IN in) (NP (DT the) (NN universe))))) (. .)))
The element hydrogen is the most abundant in the universe.