sentence1_binary_parse: ( ( An acid ) ( ( releases ( ( hydrogen ions ) ( in solution ) ) ) . ) )
sentence1_parse: (ROOT (S (NP (DT An) (NN acid)) (VP (VBZ releases) (NP (NP (NN hydrogen) (NNS ions)) (PP (IN in) (NP (NN solution))))) (. .)))
sentence1: An acid releases hydrogen ions in solution.
sentence2_parse: (ROOT (S (NP (NNS Acids)) (VP (VBP release) (NP (NN hydrogen) (NNS ions)) (, ,) (PP (IN by) (NP (NN definition)))) (. .)))
sentence2: Acids release hydrogen ions, by definition.