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:

What is this Miramar?

"Results": [
    {
        "TypeName": "LOC",
        "Text": "Miramar",
        "Start": 13,
        "End": 20
    }
]

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

At that time, UN Secretary General Kofi Annan demanded steps be taken to end the ethnic violence in Darfur within 48 hours.


"Results": [
    {
        "TypeName": "ORG",
        "Text": "UN",
        "Start": 14,
        "End": 16
    },
    {
        "TypeName": "PER",
        "Text": "Kofi Annan",
        "Start": 35,
        "End": 45
    },
    {
        "TypeName": "LOC",
        "Text": "Darfur",
        "Start": 100,
        "End": 106
    }
]