( ( A sphygmomanometer ) ( ( is ( ( ( a ( small piece ) ) ( of ( medical equipment ) ) ) ( that ( is ( used ( to ( measure ( ( a person ) ( s ( blood pressure ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (NN sphygmomanometer)) (VP (VBZ is) (NP (NP (DT a) (JJ small) (NN piece)) (PP (IN of) (NP (JJ medical) (NN equipment))) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB measure) (SBAR (S (NP (DT a) (NN person)) (VP (VBZ s) (NP (NN blood) (NN pressure)))))))))))))) (. .)))
A sphygmomanometer is a small piece of medical equipment that is used to measure a person s blood pressure.
(ROOT (S (NP (NNP Sphygmomanometer)) (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB measure) (NP (NN blood) (NN pressure))))))) (. .)))