Let's say Joe wants to add the coordinates of the Eiffel Tower to OpenStreetMap.
Joe opens Google Maps, enters "Eiffel Tower" in the search box. The Eiffel Tower appears at the center of the map. Joe then estimates where the center of the Eiffel Tower is and right-clicks on that pixel to show the exact latitude/longitude of the clicked point.
Can Joe add these coordinates to OpenStreetMap, which uses the Open Database License? Or does the Google Maps copyright still apply?
Note: All of this is done manually. While Google Maps probably has exact coordinates for the Eiffel Tower, Joe clicked pretty randomly so he won't have the exact same coordinates.