( ( ( 1 ( ( The ( Mercalli method ) ) ( of ( ( measuring ( earthquake intensity ) ) ( in ( terms ( of damage ) ) ) ) ) ) ) ( ( ( incurred ( ( ( originated ( in 1902 ) ) and ) ( continued ( to ( about 1935 ) ) ) ) ) , ) ( when ( ( ( the ( Richter method ) ) ( of ( ( recording ( earthquake magnitude ) ) ( in ( terms ( of energy ) ) ) ) ) ) ( released ( replaced ( the ( Mercalli scale ) ) ) ) ) ) ) ) . )
(ROOT (NP (NP (LST (LS 1)) (NP (DT The) (NNP Mercalli) (NN method)) (PP (IN of) (S (VP (VBG measuring) (NP (NN earthquake) (NN intensity)) (PP (IN in) (NP (NP (NNS terms)) (PP (IN of) (NP (NN damage))))))))) (VP (VBN incurred) (S (VP (VP (VBN originated) (PP (IN in) (NP (CD 1902)))) (CC and) (VP (VBN continued) (PP (TO to) (NP (QP (RB about) (CD 1935))))))) (, ,) (SBAR (WHADVP (WRB when)) (S (NP (NP (DT the) (JJR Richter) (NN method)) (PP (IN of) (NP (NP (VBG recording) (NN earthquake) (NN magnitude)) (PP (IN in) (NP (NP (NNS terms)) (PP (IN of) (NP (NN energy)))))))) (VP (VBD released) (VP (VBN replaced) (NP (DT the) (NNP Mercalli) (NN scale))))))) (. .)))
1 The Mercalli method of measuring earthquake intensity in terms of damage incurred originated in 1902 and continued to about 1935, when the Richter method of recording earthquake magnitude in terms of energy released replaced the Mercalli scale.
(ROOT (S (NP (NNS Seismologists)) (ADVP (RB originally)) (VP (VBD measured) (NP (NP (DT the) (NN intensity)) (PP (IN of) (NP (DT an) (NN earthquake)))) (PP (IN with) (NP (DT the) (JJ mercalli) (NN scale)))) (. .)))
Seismologists originally measured the intensity of an earthquake with the mercalli scale.