(S (S (ADVP (RB However)) (COMMA ,) (S (PP (IN after) (BASENP (DT an) (NN investigation))) (COMMA ,) (S (BASENP (NN health) (NNS officials)) (VP (VBD concluded) (SBAR (IN that) (S (BASENP (EX there)) (VP (VBD was) (NP (NP (BASENP (DT an) (ADJP (RB abnormally) (JJ large)) (NN amount)) (PP (IN of) (BASENP (NN lead)))) (VP (VBG circulating) (PP (IN in) (NP (BASENP (DT the) (NNS villagers) (POS ')) (NNS bodies)))))))))))) (PERIOD .))