( ( For example ) ( , ( ( blood pressure ) ( ( may ( be ( operationalized ( ( ( in ( ( one ( study as ) ) ( measured ( by ( cuff ( , ( ( sphygmomanometer and ) stethoscope ) ) ) ) ) ) ) and ) ( in ( ( another study ) ( as ( cuff ( and ( automated sphygmomanometer ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN For) (NP (NN example))) (, ,) (NP (NN blood) (NN pressure)) (VP (MD may) (VP (VB be) (VP (VBN operationalized) (PP (PP (IN in) (NP (NP (CD one) (NN study) (RB as)) (VP (VBN measured) (PP (IN by) (NP (NN cuff) (, ,) (NN sphygmomanometer) (CC and) (NN stethoscope)))))) (CC and) (PP (IN in) (NP (NP (DT another) (NN study)) (PP (IN as) (NP (NN cuff) (CC and) (VBN automated) (NN sphygmomanometer))))))))) (. .)))
For example, blood pressure may be operationalized in one study as measured by cuff, sphygmomanometer and stethoscope and in another study as cuff and automated sphygmomanometer.
(ROOT (S (NP (NNP Sphygmomanometer)) (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB measure) (NP (NN blood) (NN pressure))))))) (. .)))