( This ( ( is ( because ( hydrogen ( is ( by ( ( far ( the ( ( most abundant ) element ) ) ) ( in ( the universe ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This)) (VP (VBZ is) (SBAR (IN because) (S (NP (NN hydrogen)) (VP (VBZ is) (PP (IN by) (NP (NP (RB far) (DT the) (ADJP (RBS most) (JJ abundant)) (NN element)) (PP (IN in) (NP (DT the) (NN universe))))))))) (. .)))
This is because hydrogen is by far the most abundant element in the universe.
(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))))) (. .)))