{
    "GJ0d": {
        "_city_selection_note": "11 cultural touchstones, one per major historical/cultural cluster. Criterion: would a player setting a bookmark to 'Earth' recognize this city? Full 46-city reference list is in git history (trimmed Sprint 36 #849). PR #133 review rebalance: Sydney → Lagos (African representation); London → Brussels (future EU capital fit). To adjust: edit this array and re-run sol_import.py, then generate_atlas.py --body GJ0d.",
        "oceans": [
            {"name": "Pacific Ocean",  "center": [128, 440]},
            {"name": "Atlantic Ocean", "center": [128, 170]},
            {"name": "Indian Ocean",   "center": [160, 330]},
            {"name": "Arctic Ocean",   "center": [15, 256]},
            {"name": "Southern Ocean", "center": [230, 256]}
        ],
        "mountain_ranges": [
            {"name": "Himalayas",             "peak": [93, 350],  "center": [93, 348]},
            {"name": "Andes",                 "peak": [118, 140], "center": [140, 140]},
            {"name": "Rocky Mountains",       "peak": [88, 105],  "center": [85, 105]},
            {"name": "Alps",                  "peak": [82, 264],  "center": [82, 264]},
            {"name": "Urals",                 "peak": [68, 300],  "center": [72, 300]},
            {"name": "Atlas Mountains",       "peak": [93, 254],  "center": [94, 254]},
            {"name": "Great Dividing Range",  "peak": [160, 420], "center": [162, 420]}
        ],
        "rivers": [
            {"name": "Danube",        "mouth": [82, 278]},
            {"name": "Volga",         "mouth": [75, 298]},
            {"name": "Rhine",         "mouth": [79, 264]},
            {"name": "Mississippi",   "mouth": [96, 107]},
            {"name": "St. Lawrence",  "mouth": [80, 132]},
            {"name": "Amazon",        "mouth": [126, 165]},
            {"name": "Paraná",        "mouth": [148, 155]},
            {"name": "Nile",          "mouth": [98, 286]},
            {"name": "Congo",         "mouth": [125, 268]},
            {"name": "Tigris",        "mouth": [96, 303]},
            {"name": "Yangtze",       "mouth": [97, 387]},
            {"name": "Ganges",        "mouth": [102, 351]},
            {"name": "Mekong",        "mouth": [114, 374]},
            {"name": "Murray",        "mouth": [170, 417]}
        ],
        "cities": [
            {"name": "Brussels",  "center": [80, 266],  "population": 2100000,  "region": "europe"},
            {"name": "Istanbul",  "center": [83, 279],  "population": 15000000, "region": "europe"},
            {"name": "Moscow",    "center": [72, 294],  "population": 12700000, "region": "europe"},

            {"name": "New York",  "center": [87, 130],  "population": 20100000, "region": "north_america"},

            {"name": "São Paulo", "center": [143, 164], "population": 22400000, "region": "south_america"},

            {"name": "Cairo",     "center": [97, 286],  "population": 21300000, "region": "africa"},

            {"name": "Tokyo",     "center": [92, 400],  "population": 37400000, "region": "east_asia"},
            {"name": "Delhi",     "center": [99, 339],  "population": 32900000, "region": "east_asia"},
            {"name": "Beijing",   "center": [87, 383],  "population": 21500000, "region": "east_asia"},

            {"name": "Singapore", "center": [119, 372], "population": 5900000,  "region": "southeast_asia"},
            {"name": "Lagos",     "center": [119, 263], "population": 15000000, "region": "africa"}
        ]
    }
}