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?

Petersen held discussions with both Kumaratunga and the reclusive LTTE leader Velupillai Prabhakaran in the rebel stronghold of Kilinochchi without success, and chief Tamil rebel negotiator Anton Balasingham and Norwegian envoy Erik Solheim held closed-door talks at the international airport late Saturday in an effort to keep the salvage effort on track, diplomatic sources said.


"Results": [
    {
        "TypeName": "PER",
        "Text": "Petersen",
        "Start": 0,
        "End": 8
    },
    {
        "TypeName": "PER",
        "Text": "Kumaratunga",
        "Start": 36,
        "End": 47
    },
    {
        "TypeName": "ORG",
        "Text": "LTTE",
        "Start": 66,
        "End": 70
    },
    {
        "TypeName": "PER",
        "Text": "Velupillai Prabhakaran",
        "Start": 78,
        "End": 100
    },
    {
        "TypeName": "LOC",
        "Text": "Kilinochchi",
        "Start": 128,
        "End": 139
    },
    {
        "TypeName": "PER",
        "Text": "Anton Balasingham",
        "Start": 190,
        "End": 207
    },
    {
        "TypeName": "PER",
        "Text": "Erik Solheim",
        "Start": 228,
        "End": 240
    }
]