| http://www.w3.org/ns/prov#value | - Of course, the trick works only in the context of the federation: if I go to the counter of the non federated airline C and I show my A card, the maximum I can obtain is a smile.Finally, note that the airlines often give access to their assets via their websites: once you log in, using your credentials ([PIN|frequent flyer number|username]-password), you can do things such as book flights, check y
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