rtokens: British Airways 's initial response was that " unconditional divestiture of slots is unprecedented and if done it must be on the basis of fair market value . "
pos: RB , PRP VBD DT NNS " JJR JJ " IN DT VBN IN JJ JJ NNS IN JJ NN NNS .
tokens: However , it called the conditions " more severe " than those imposed by other regulatory authorities on similar airline alliances .
ltokens: American 's parent , AMR Corp. , said it did not view the terms as a " deal breaker . "