(S (S (NP (NP (BASENP (NNP China) (POS 's)) (NNS mines)) (PRN (COMMA ,) (NP (NP (BASENP (NN many)) (PP (IN of) (BASENP (PRP them)))) (ADJP (JJ illegal))) (COMMA ,))) (VP (VBP are) (VP (VBN considered) (S (ADJP (BASENP (DT the) (NN world) (POS 's)) (ADJP (RBS most) (JJ dangerous))))))) (PERIOD .))