(S (S (BASENP (NNS Police)) (VP (VBP say) (SBAR (S (BASENP (DT the) (NN monkey)) (VP (MD will) (VP (VP (VB remain) (PP (IN in) (BASENP (NN quarantine)))) (PP (IN for) (NP (QP (ADVP (IN at) (JJS least)) (NN ten)) (NNS days))))))))) (PERIOD .))