(S (S (BASENP (NN Security)) (VP (MD will) (VP (VP (VB require) (NP (BASENP (NN 200) (NNS police)) (BASENP (DT a) (NN day)))) (COMMA ,) (PP (IN at) (NP (BASENP (DT an) (VBN estimated) (NN cost)) (PP (IN of) (NP (QP (ADVP (RBR more) (IN than)) (BASENP (DOLLAR $) (NN 500,000)))))))))) (PERIOD .))