Last modified: 2014-07-30 15:18:12 UTC
On https://www.wikidata.org/wiki/Q474723 the interface shows "The value is invalid and cannot be displayed.". I first thought this was https://bugzilla.wikimedia.org/show_bug.cgi?id=64887 coming back to haunt us again, but it's something different. If you look at https://www.wikidata.org/w/api.php?action=wbgetentities&ids=Q474723&props=claims and search for P625 you'll see error="Can only construct GlobeCoordinateValue with a string globe parameter" That gives a lot more information. Something like that should probably be done for the user interface too.
This problem is already fixed in https://github.com/DataValues/Geo/pull/13. Please note that the fix is not live at wikidata.org at the moment but will be soon.