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?

Now, FLDS leader Warren Jeffs has been added to the FBI 's list of "Ten Most Wanted Fugitives," a move that caps law enforcement 's dramatic change of approach toward the polygamous group in recent years...[because of] the impact that the group 's practices, law enforcement officials say, are having on the most vulnerable within the sect, particularly children and women.

"Results": [
    {
        "TypeName": "ORG",
        "Text": "FLDS",
        "Start": 5,
        "End": 9
    },
    {
        "TypeName": "PER",
        "Text": "Warren Jeffs",
        "Start": 17,
        "End": 29
    },
    {
        "TypeName": "ORG",
        "Text": "FBI",
        "Start": 52,
        "End": 55
    }
]