(S (S (S (BASENP (PRP He)) (VP (VBD was) (VP (VP (VP (VP (VBN killed) (PP (IN at) (NP (BASENP (NN 06.00) (NN am)) (PRN (LRB -LRB-) (BASENP (NN 03.00) (NN GMT)) (RRB -RRB-))))) (PP (IN on) (BASENP (NN Tuesday)))) (PP (IN in) (BASENP (JJ western) (NNP Baghdad)))) (PP (IN by) (BASENP (JJ unknown) (NNS gunmen)))))) (SBAR (IN while) (S (BASENP (PRP he)) (VP (VBD was) (VP (VBG heading) (PP (TO to) (NP (BASENP (PRPD his) (NN work) (NN place)) (PP (IN in) (BASENP (NNP Karbala)))))))))) (PERIOD .))