(S (S (BASENP (DT A) (NN two) (NN vehicle) (NN patrol)) (VP (VBD was) (VP (VBN sent) (PP (TO to) (NP (BASENP (DT the) (NN incident)) (VP (VBN given) (NP (BASENP (JJ previous) (NN trouble)) (PP (IN in) (BASENP (DT the) (NN area)))))))))) (PERIOD .))