(S (S (BASENP (PRP They)) (VP (VBD commented) (SBAR (IN that) (S (BASENP (PRP they)) (VP (VBP have) (VP (VBN stated) (SBAR (IN that) (S (BASENP (PRP it)) (VP (MD would) (VP (VB breach) (NP (BASENP (DT the) (NNP BBC) (POS 's)) (BASENP (NN impartiality) (NNS rules))))))))))))) (PERIOD .))