sentence1_binary_parse: ( ( Some capillaries ) ( ( have ( ( ( precapillary sphincters ) ( -LRB- ( ( ( a ring ) ( of ( smooth muscle ) ) ) -RRB- ) ) ) ( that ( help ( regulate ( blood flow ) ) ) ) ) ) . ) )
sentence1_parse: (ROOT (S (NP (DT Some) (NNS capillaries)) (VP (VBP have) (NP (NP (JJ precapillary) (NNS sphincters)) (PRN (-LRB- -LRB-) (NP (NP (DT a) (NN ring)) (PP (IN of) (NP (JJ smooth) (NN muscle)))) (-RRB- -RRB-)) (SBAR (WHNP (WDT that)) (S (VP (VBP help) (VP (VB regulate) (NP (NN blood) (NN flow)))))))) (. .)))
sentence1: Some capillaries have precapillary sphincters (a ring of smooth muscle) that help regulate blood flow.
sentence2_parse: (ROOT (S (NP (JJ Smooth) (NN muscle)) (VP (VBZ regulates) (NP (NP (NN air) (NN flow)) (PP (IN in) (NP (NNS lungs))))) (. .)))
sentence2: Smooth muscle regulates air flow in lungs.