| http://www.w3.org/ns/prov#value | - And if I ask yet a different question, e.g. how hard would it be to walk or ride a bike, then I may want to include elevations on the map, i.e. contour lines, to allow me to determine the difficulty of traversing the distance, maybe other things as well, e.g. foot and bike paths, not just roads for cars.
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