| http://www.w3.org/ns/prov#value | - of the judgment indicates that routes have already been set between the addresses of the same start and end points, the route-finding unit 122 searches the topology sub-database for devices on routes between the address of a start point and the address of an end point specified in the request other than the already set routes by using the address of a start point, the address of an end point and
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