(S (S (BASENP (PRP He)) (VP (VBZ is) (VP (VBN known) (PP (IN as) (NP (BASENP (NN one)) (PP (IN of) (NP (BASENP (DT the) (JJ main) (NNS advocates)) (PP (IN for) (NP (BASENP (JJ nationwide) (NN installation)) (PP (IN of) (BASENP (JJ such) (NNS cameras)))))))))))) (PERIOD .))