There are some useful vocabularies out there for use of semantic web applications, one of which is the well known "foaf". How should I use it in an offline system, meaning a network disconnected from the www? Is it downloadable? Should I use some DNS "trickery" in my network? Is it at all possible?
Regarding the comments above and some more reading I had, the solution seems to be downloading the necessary ontologies and saving them to the cache of whichever tool you're using. Whenever an ontology is needed, the cache will be checked first, so no access to the network will be made.