(S (S (BASENP (NN Police)) (VP (VBD said) (SBAR (S (NP (BASENP (DT the) (NN man)) (SBAR (WHNP (WP who)) (S (VP (VBD killed) (BASENP (NN 35)))))) (VP (VBD was) (NP (BASENP (DT a) (JJ twenty-year-old) (NN suicide) (NN bomber)) (PP (IN from) (BASENP (DT the) (NNP North) (NNP Caucasus) (NN region))))))))) (PERIOD .))