sentence1_binary_parse: ( ( Arrow heads ) ( ( ( indicate ( DNA fragments ) ) ( with ( different mobilities ) ) ) . ) )
sentence1_parse: (ROOT (S (NP (NNP Arrow) (NNS heads)) (VP (VBP indicate) (NP (NN DNA) (NNS fragments)) (PP (IN with) (NP (JJ different) (NNS mobilities)))) (. .)))
sentence1: Arrow heads indicate DNA fragments with different mobilities.
sentence2_parse: (ROOT (S (NP (JJ Reversible) (NNS reactions)) (VP (VBP are) (VP (VBN indicated) (PP (IN by) (NP (NP (JJ opposite-headed) (NNS kinds)) (PP (IN of) (NP (NNS arrows))))))) (. .)))
sentence2: Reversible reactions are indicated by opposite-headed kinds of arrows.