{
    "city1": { "eq": "Moscow" },
    "city2": [{ "eq": "Kiev" }],
    "city3": { "eq": "Kiev" },
    "city4": [{ "eq": ["Dnipro"] }],
    "number1": { "eq": 2 },
    "number2": { "eq": "2" },
    "empty_city": { "eq": "Kiev" }
}