sentence1_binary_parse: ( Helium ( ( ( is now ) ( known ( to ( ( be ( ( the ( second ( ( most abundant ) element ) ) ) ( -LRB- ( ( after Hydrogen ) -RRB- ) ) ) ) ( in ( the Universe ) ) ) ) ) ) . ) )
sentence1_parse: (ROOT (S (NP (NNP Helium)) (VP (VBZ is) (ADVP (RB now)) (VP (VBN known) (S (VP (TO to) (VP (VB be) (NP (NP (DT the) (JJ second) (ADJP (RBS most) (JJ abundant)) (NN element)) (PRN (-LRB- -LRB-) (PP (IN after) (NP (NNP Hydrogen))) (-RRB- -RRB-))) (PP (IN in) (NP (DT the) (NNP Universe)))))))) (. .)))
sentence1: Helium is now known to be the second most abundant element ( after Hydrogen ) in the Universe.
sentence2_parse: (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))))) (. .)))
sentence2: The element hydrogen is the most abundant in the universe.