( 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 (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.