(S (S (PP (IN After) (NP (NP (BASENP (DT a) (NN press) (NN conference)) (PP (IN in) (BASENP (NNP London)))) (PP (IN from) (NP (BASENP (DT the) (NNP Metropolitan) (NNP Police) (CC and) (NNP Transport)) (PP (IN for) (BASENP (NNP London))))))) (COMMA ,) (S (BASENP (JJR more) (NNS details)) (VP (VBP are) (VP (VBG emerging) (PP (IN about) (NP (NP (BASENP (DT the) (NNS attacks)) (PP (IN in) (BASENP (NNP London)))) (PP (IN on) (BASENP (NNP Thursday))))))))) (PERIOD .))