( ( In ( these ( clouds hydrogen ) ) ) ( , ( ( ( the ( ( most abundant ) element ) ) ( in ( ( ( the universe ) , ) ( takes-on molecular ) ) ) ) ( form . ) ) ) )
(ROOT (S (PP (IN In) (NP (DT these) (NNS clouds) (NN hydrogen))) (, ,) (NP (NP (DT the) (ADJP (RBS most) (JJ abundant)) (NN element)) (PP (IN in) (NP (NP (DT the) (NN universe)) (, ,) (NP (JJ takes-on) (NNS molecular))))) (VP (VBP form)) (. .)))
In these clouds hydrogen, the most abundant element in the universe, takes-on molecular form.
(ROOT (S (NP (NNP Hydrogen)) (VP (VBZ is) (NP (NP (DT the) (ADJP (RBS most) (JJ abundant)) (NN element)) (PP (IN in) (NP (DT the) (NN universe))))) (. .)))