( ( Some ( of ( these instruments ) ) ) ( ( are ( ( ( ( ( ( pressure gauges ) , ) ( current meters ) ) , ) and ) ( sediment ( transport sensors ) ) ) ) . ) )
(ROOT (S (NP (NP (DT Some)) (PP (IN of) (NP (DT these) (NNS instruments)))) (VP (VBP are) (NP (NP (NN pressure) (NNS gauges)) (, ,) (NP (JJ current) (NNS meters)) (, ,) (CC and) (NP (JJ sediment) (NN transport) (NNS sensors)))) (. .)))
Some of these instruments are pressure gauges, current meters, and sediment transport sensors.
(ROOT (S (NP (NNP Sediment)) (VP (VBZ is) (VP (VBN transported) (PP (IN by) (NP (NNS currents))))) (. .)))