[Python] Saving .graphml file fails to include lat/lng-attributes

I generated a graph from a city using OSMnx:

ka1 = ox.graph_from_place("Karlsruhe, Germany", network_type="drive")


Then I saved it as a .graphml file:

ox.save_graphml(ka1,filepath="/home/user/karlsruhe.graphml", gephi=True, encoding='utf-8')


But now lat and lng data (x and y) isn't part of the graphml file anymore. To display the graph with the Geo Layout Plugin in Gephi, the nodes need lat and lng data. Is it possible to get a .graphml file with lat and lng data?

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