(S (S (ADVP (RB Currently)) (COMMA ,) (S (BASENP (NN work)) (VP (VP (VBZ is) (ADJP (JJ on-going))) (S (VP (TO to) (VP (VP (VB retrieve) (NP (BASENP (NNS bodies)) (CC and) (BASENP (JJ forensic) (NN evidence)))) (PP (IN from) (NP (BASENP (DT the) (NN carriage)) (PP (IN of) (NP (BASENP (DT the) (NN train)) (PP (IN in) (NP (NP (BASENP (DT the) (JJ deep) (NN tunnel)) (PP (IN of) (BASENP (DT the) (NNP Piccadilly) (NN line)))) (PP (IN near) (NP (BASENP (NNP King) (POS 's)) (NNP Cross))))))))))))))) (PERIOD .))