Please identify all the named entities mentioned in the input sentence provided below. Use only the categories: PER - person, ORG - organization, and LOC - location.
Remember, nationalities are neither locations nor organizations, and organizations can represent other groups of people.
Pay attention to the provided example. You should only output the results in JSON format, following a similar structure to the example result provided.

Example sentence and results:

Where in the world is Iguazu?

"Results": [
    {
        "TypeName": "LOC",
        "Text": "Iguazu",
        "Start": 22,
        "End": 28
    }
]

Considering the input sentence below, what is the output result?

The dynamics of change in the state of health of children affected by the Chernobyl accident in all three countries - Belarus, Russia, and Ukraine - in the post-accident period is characterized by persistent negative tendencies: the morbidity rate is going up, the number of really healthy children is dropping, and disability is increasing .


"Results": [
    {
        "TypeName": "LOC",
        "Text": "Chernobyl",
        "Start": 74,
        "End": 83
    },
    {
        "TypeName": "LOC",
        "Text": "Belarus",
        "Start": 118,
        "End": 125
    },
    {
        "TypeName": "LOC",
        "Text": "Russia",
        "Start": 127,
        "End": 133
    },
    {
        "TypeName": "LOC",
        "Text": "Ukraine",
        "Start": 139,
        "End": 146
    }
]