(S (S (BASENP (NNS Authorities)) (VP (VBP have) (VP (VBN said) (SBAR (IN that) (S (NP (BASENP (NN 48) (NNS whales)) (PP (IN near) (NP (BASENP (NNP Christchurch)) (COMMA ,) (BASENP (NNP New) (NNP Zealand))))) (VP (VBD were) (VP (VBN beached) (BASENP (NN yesterday))))))))) (PERIOD .))