(S (S (BASENP (NNS Witnesses)) (VP (VBD said) (SBAR (IN that) (S (BASENP (NN one) (NN man)) (VP (VP (VP (VBD pulled) (PRT (RP out))) (BASENP (DT a) (NN handgun))) (CC and) (VP (VP (VBD shot) (BASENP (DT another) (NN man))) (PP (IN in) (BASENP (DT the) (NN head))))))))) (PERIOD .))