(S (S (BASENP (NNP Ottawa) (NNS police)) (VP (VBP are) (VP (VBG looking) (PP (IN for) (NP (BASENP (DT the) (JJ 23-year-old) (NNP Montreal) (NN man)) (CC and) (NP (BASENP (PRPD his) (NN two) (NNS friends)) (COMMA ,) (NP (BASENP (DT both)) (PP (IN under) (NP (BASENP (DT the) (NN age)) (PP (IN of) (BASENP (NN 18)))))))))))) (PERIOD .))