How to get all outline nodes datas as GPS-Data?

Hi there,

I want to generate a map that shows the outline of an object when you move the cursor over it. To model the outlines, I need the GPS data of the nodes of the outlines of these objects. Does anyone have an idea how I have to formulate a query to overpass turbo that gives me all (i.e. at least 4) lon and lats of an object when I enter its address?

Thanks