sentence1_binary_parse: ( ( ( ( ( ( The cytoplasm ) ( -LRB- ( ( arrow heads ) -RRB- ) ) ) or ) ( ( the surface ) ( of ( vacuolated cells ) ) ) ) ( -LRB- ( arrows -RRB- ) ) ) ( ( ( more often ) ( reveals ( positive reaction ) ) ) . ) )
sentence1_parse: (ROOT (S (NP (NP (NP (NP (DT The) (NN cytoplasm)) (PRN (-LRB- -LRB-) (NP (NN arrow) (NNS heads)) (-RRB- -RRB-))) (CC or) (NP (NP (DT the) (NN surface)) (PP (IN of) (NP (JJ vacuolated) (NNS cells))))) (PRN (-LRB- -LRB-) (NP (NNS arrows)) (-RRB- -RRB-))) (VP (ADVP (RBR more) (RB often)) (VBZ reveals) (NP (JJ positive) (NN reaction))) (. .)))
sentence1: The cytoplasm (arrow heads) or the surface of vacuolated cells (arrows) more often reveals positive reaction.
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.