(S (S (BASENP (NNS Witnesses)) (VP (VBP say) (SBAR (S (S (NP (BASENP (DT the) (NN two) (NNS men)) (PRN (COMMA ,) (UCP (CC both) (UCP (ADJP (JJ Asian)) (CC and) (PP (IN in) (BASENP (PRPD their) (NNS 20s))))) (COMMA ,))) (VP (VBD were) (VP (VBG smoking) (PP (IN outside) (BASENP (DT the) (NN club)))))) (SBAR (WHADVP (WRB when)) (S (NP (BASENP (DT a) (NN man)) (VP (VBG wearing) (BASENP (DT a) (NN ski) (NN mask)))) (VP (VP (VP (VBD approached) (CC and) (VBD shot)) (BASENP (DT the) (NN two))) (PP (IN around) (NP (NP (BASENP (NN 1:30) (NN a.m.)) (BASENP (JJ local) (NN time))) (PRN (LRB -LRB-) (NP (BASENP (NN 9:30)) (BASENP (NN UTC))) (RRB -RRB-))))))))))) (PERIOD .))