(S (S (S (BASENP (JJ Large) (NN herd) (NNS animals)) (VP (MD may) (VP (VB have) (NP (BASENP (DT the) (NN ability)) (SBAR (S (VP (TO to) (VP (VB detect) (NP (BASENP (NN earth) (POS 's)) (BASENP (JJ magnetic) (NN field))))))))))) (COMMA ,) (SINV (SINV (SINV (VP (VBD concluded)) (NP (BASENP (NNS scientists)) (PP (IN in) (BASENP (NNP Germany))))) (PP (IN in) (NP (BASENP (DT a) (NN report)) (VP (VBN published) (PP (IN in) (NP (BASENP (DT this) (NN week) (POS 's)) (NP (BASENP (NNPS Proceedings)) (PP (IN of) (NP (BASENP (DT the) (NNP National) (NNP Academy)) (PP (IN of) (BASENP (NNPS Sciences)))))))))))) (SBAR (IN after) (S (VP (VBG performing) (NP (BASENP (NNS studies)) (PP (IN of) (NP (BASENP (NNS cattle) (CC and) (NNS deer)) (BASENP (ADJP (NN grazing) (CC and) (JJ sleeping)) (NNS patterns)))))))))) (PERIOD .))