fantasy-vacation-planner/config/schema/player-schema.json

{
    "type": "object",
    "properties": {
        "route": {
            "type": "array",
            "items": {
                "type": "object",
                "properties": {
                    "from": {"type": "string"},
                    "to": {"type": "string"},
                    "transportation": {"type": "string"}
                },
                "required": ["from", "to", "transportation"]
            },
            "minItems": 1
        }
    },
    "required": ["route"]
}