( Accelerometers ( ( ( ( measure ( linear acceleration ) ) and ) ( tilt angle ) ) . ) )
(ROOT (S (NP (NNS Accelerometers)) (VP (VP (VB measure) (NP (JJ linear) (NN acceleration))) (CC and) (VP (VB tilt) (NP (NN angle)))) (. .)))
Accelerometers measure linear acceleration and tilt angle.
(ROOT (S (NP (NP (NNP Instruments)) (SBAR (WHNP (WDT that)) (S (VP (VB measure) (NP (NP (DT the) (NN angle)) (PP (IN of) (NP (NP (DT the) (NN slope)) (PP (IN of) (NP (DT a) (NN volcano)))))))))) (VP (VBP are) (VP (VBN called) (NP (NN tilt) (NNS meters)))) (. .)))