(S (S (S (BASENP (PRP It)) (VP (VP (VP (VBZ is) (RB not)) (ADJP (RB yet) (JJ clear))) (SBAR (IN why) (S (BASENP (DT the) (NN interpreter)) (VP (VBD started) (BASENP (NN shooting))))))) (COLON ;) (S (ADVP (RB However)) (COMMA ,) (S (BASENP (DT the) (NN attacker)) (VP (VBD seemed) (S (VP (TO to) (VP (VB be) (NP (NP (BASENP (DT a) (QT (DQL ``) (JJ disgruntled) (NN employee) (DQR ''))) (PRN (COMMA ,) (SBAR (IN as) (S (VBN opposed) (PP (TO to) (BASENP (DT a) (NN militant))))) (COMMA ,))) (PP (VBG according) (PP (TO to) (BASENP (DT a) (NNP US) (JJ military) (NN official)))))))))))) (PERIOD .))