Il ref:mise non puo' assumere piu' valori:
https://www.openstreetmap.org/node/227591500
https://www.openstreetmap.org/node/227773674
https://www.openstreetmap.org/node/227958010
https://www.openstreetmap.org/node/227961058
https://www.openstreetmap.org/node/227975018
https://www.openstreetmap.org/node/518023307
https://www.openstreetmap.org/node/2205350328
https://www.openstreetmap.org/node/2205350336
https://www.openstreetmap.org/node/10816055354