<p>In that case, using OSM object IDs is not the right approach as they are not stable.</p>
<p>"Stable IDs" is a discussion we've been having for years, and Roland Olbricht has implemented something like that in Overpass (see <a href="http://wiki.openstreetmap.org/wiki/Overpass_API/Permanent_ID">http://wiki.openstreetmap.org/wiki/Overpass_API/Permanent_ID</a>).</p>
<p>Simply slapping RDF on top of our database and thereby declaring our existing IDs permanent doesn't cut it. <a href="http://www.openstreetmap.org/browse/way/8125890">http://www.openstreetmap.org/browse/way/8125890</a> could be the River Thames today, and a nearby house tomorrow. It would be foolish to link to objects from the outside by their ID; a software solution like Roland's is required to make this work reliably.</p>
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