| http://www.w3.org/ns/prov#value | - Message types are of interest to the neighboring peer servers 18-8 through 18-10 if the neighboring peer servers 18-8 through 18-10 host virtual objects within their virtual spaces that consume the message types or if the neighboring peer servers of the peer servers 18-8 though 18-10 express an interest in the message types in response to propagation of the ad/sub message from the peer servers 18-
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