(S (PP (VBG According) (PP (TO to) (BASENP (DT a) (NNP JCS) (NN official)))) (COMMA ,) (QT (DQL ``) (QTC (S (BASENP (PRP We)) (VP (VBP 're) (VP (VP (VP (VBG keeping) (BASENP (JJ close) (NNS tabs))) (PP (IN on) (NP (NP (NP (BASENP (DT the) (JJ demilitarized) (NN zone)) (PRN (LRB -LRB-) (BASENP (NNP DMZ)) (RRB -RRB-))) (COMMA ,) (NP (BASENP (NNP Joint) (NNP Security) (NNP Area)) (PRN (LRB -LRB-) (BASENP (NNP JSA)) (RRB -RRB-)))) (CC and) (NP (BASENP (NNP Northern) (NNP Limit) (NNP Line)) (PRN (LRB -LRB-) (BASENP (NNP NLL)) (RRB -RRB-)))))) (PP (IN for) (NP (BASENP (NNS possibilities)) (PP (IN of) (BASENP (JJ North) (JJ Korean) (NNS provocations)))))))) (PERIOD .)) (DQR '')))