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 22 member countries of the Arab league, from Mauritania to the Gulf States, have a total population of 300 millions, larger than the US and almost as large as the EU before its expansion.


"Results": [
    {
        "TypeName": "ORG",
        "Text": "Arab league",
        "Start": 31,
        "End": 42
    },
    {
        "TypeName": "LOC",
        "Text": "Mauritania",
        "Start": 49,
        "End": 59
    },
    {
        "TypeName": "LOC",
        "Text": "US",
        "Start": 137,
        "End": 139
    },
    {
        "TypeName": "LOC",
        "Text": "EU",
        "Start": 167,
        "End": 169
    }
]