(S (S (S (BASENP (DT The) (JJ first) (NN earthquake)) (VP (VP (VP (VBD measured) (BASENP (DT a) (NN 4.7))) (PP (IN on) (BASENP (DT the) (NNP Richter) (NN magnitude) (NN scale)))) (CC and) (VP (VBD was) (PP (IN in) (BASENP (DT a) (JJ mountainous) (NN area)))))) (CC and) (S (BASENP (DT the) (NN second)) (VP (VBD measured) (BASENP (DT a) (NN 5.1))))) (PERIOD .))