(S (S (BASENP (JJ Chief) (NN police) (NNS officers)) (VP (VBD were) (VP (VBN asked) (S (VP (TO to) (VP (VB lobby) (NP (BASENP (NNS MPs)) (VP (VBG wavering) (PP (IN over) (NP (BASENP (DT the) (NN introduction)) (PP (IN of) (NP (BASENP (DT a) (JJ controversial) (JJ new) (NN law)) (VP (VBG allowing) (S (BASENP (NN police)) (VP (TO to) (VP (VP (VP (VB detain) (BASENP (DT a) (NN terror) (NN suspect))) (PP (IN for) (BASENP (NN 90) (NNS days)))) (PP (IN without) (BASENP (NN charge))))))))))))))))))) (PERIOD .))