( ( ( ( ( ( ( The ( ( cost and ) performance ) ) ( of ( the ( new tiltmeter ) ) ) ) ( are ( comparable ( to ( short-baseline tiltmeters ) ) ) ) ) , ) and ) ( ( because ( of ( its ( ability ( to ( measure ( ( ( a ( broad ( deformation field ) ) ) ( rather than ) ) ( local instabilities ) ) ) ) ) ) ) ) ( , ( ( a ( long-baseline tiltmeter ) ) ( ( is clearly ) ( a ( desirable instrument ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NP (DT The) (NN cost) (CC and) (NN performance)) (PP (IN of) (NP (DT the) (JJ new) (NN tiltmeter)))) (VP (VBP are) (ADJP (JJ comparable) (PP (TO to) (NP (JJ short-baseline) (NNS tiltmeters)))))) (, ,) (CC and) (S (PP (RB because) (IN of) (NP (PRP$ its) (NN ability) (S (VP (TO to) (VP (VB measure) (NP (NP (DT a) (JJ broad) (NN deformation) (NN field)) (CONJP (RB rather) (IN than)) (NP (JJ local) (NNS instabilities)))))))) (, ,) (NP (DT a) (JJ long-baseline) (NN tiltmeter)) (VP (VBZ is) (ADVP (RB clearly)) (NP (DT a) (JJ desirable) (NN instrument)))) (. .)))
The cost and performance of the new tiltmeter are comparable to short-baseline tiltmeters, and because of its ability to measure a broad deformation field rather than local instabilities, a long-baseline tiltmeter is clearly a desirable instrument.
(ROOT (S (NP (NNS Tiltmeters)) (VP (VBP are) (VP (VBN used) (S (VP (TO to) (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))))))))))) (. .)))