GML-OpenStreetMap

Hello alex,
On Nov 1, 2010, at 4:31 PM, Alex Hill wrote:

> I think we need GML in there.
> <http://www.opengeospatial.org/standards/gml>
> And CityGML (another application Schema for GML).
> <http://www.opengeospatial.org/standards/citygml>

GML or OpenStreetMap? 

CityGML or  OpenStreetMap with key:building ?
(http://wiki.openstreetmap.org/wiki/Key:building)

 OpenStreetMap GIS data is public (http://www.openstreetmap.org/) , accessible for most part of the world 
and comes with free tools to create or enhanced it.

What about GML data?

jacques