(S (S (NP (NP (BASENP (DT An) (JJ 18-year-old) (NN man)) (COMMA ,) (BASENP (JJ 19-year-old) (NN woman))) (CC and) (BASENP (JJ 18-year-old) (NN woman))) (VP (VBD were) (VP (ADVP (RB also)) (VP (VBN killed) (PP (IN in) (BASENP (DT the) (NN incident))))))) (PERIOD .))