(S (S (BASENP (DT This)) (VP (VBD led) (S (BASENP (NNS police)) (VP (TO to) (VP (VP (VP (VB step) (PRT (RP up))) (NP (BASENP (PRPD their) (NN presence)) (PP (IN at) (BASENP (NNPS Bulldogs) (NNS matches))))) (PP (IN for) (NP (BASENP (DT the) (NN rest)) (PP (IN of) (BASENP (DT the) (NN season)))))))))) (PERIOD .))