(S (S (S (BASENP (NNP Agca)) (VP (VBD was) (NP (BASENP (DT a) (JJ Turkish) (NN militant)) (SBAR (WHNP (WP who)) (S (VP (VBD was) (NP (BASENP (DT a) (NN member)) (PP (IN of) (BASENP (DT the) (NN nationalist) (NNP Grey) (NNPS Wolves)))))))))) (COLON ;) (S (ADVP (RB however)) (COMMA ,) (S (NP (BASENP (PRPD his) (NNS motives)) (PP (IN for) (BASENP (DT the) (NN shooting)))) (VP (VBP remain) (ADJP (JJ unclear)))))) (PERIOD .))