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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Am 18.11.2014 um 18:06 schrieb Simon Spero: > Suppose we have the following file: > --------------- > _:x rdf:type :Weasel. > _:x :favoriteEggType :Chicken . > ---------------- > > This says that there is something that is a Weasel and whose favorite type > of egg is Chicken. > > If we see this twice, we cannot tell how many chicken pickin Weasels we > have. I found that statement of yours a bit ambiguous and hope you don't mind me trying to clarify: It depends on /where/ we see this... In the file you mentioned there is /one/ anonymous chicken pickin weasel temporarily referred to as (named) _:x Any repetition of the statement and any other statement using _:x in subject or object position would refer to the very same weasel, *as long as stated in the same file*. (It's exactly as in your usage of "the following file": You don't give it a name and if you use the same words in another mail I couldn't know whether it is the one from this mail or a completely new one...) > A different file could use _:x to refer to some Chicken. There the differences start as we can never tell whether _:x in the different file is the same one or a different one anonymous animal. In practice this matters when one wants to add or remove individual statements or subgraphs from graphs: When the graphs or subgraphs have blank nodes as their origin, you usually can't. viele Gruesse Thomas Berger -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iJwEAQECAAYFAlRrg5oACgkQYhMlmJ6W47MuxgP9GF9yjeuwXSyQmZsmDYwZXhXS tnK8uoVFn+ifljgYZkyYOJH2c5SekEGvnOR/49QCHcrLiOA9H1ZdFPXHJoEyj3vV z+lBUw4qq6EdridiZ6sG/ZLmvjdrdL439te9hzJ/jWiYRWrv19MBkKwcBgc4p1WN CDZIA1Hv8JsyVGyG7Kw= =5L/V -----END PGP SIGNATURE-----