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 can I get morcillas in tampa bay , I will like the argentinian type , but I will to try anothers please?

"Results": [
    {
        "TypeName": "LOC",
        "Text": "tampa bay",
        "Start": 29,
        "End": 38
    }
]

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

Chuck and Gretchen were very positive, and when Alan 's refused to work on my bike, Chuck came right out and saw the problem and did what Alan 's mechanic would n't do.


"Results": [
    {
        "TypeName": "PER",
        "Text": "Chuck",
        "Start": 0,
        "End": 5
    },
    {
        "TypeName": "PER",
        "Text": "Gretchen",
        "Start": 10,
        "End": 18
    },
    {
        "TypeName": "ORG",
        "Text": "Alan 's",
        "Start": 48,
        "End": 55
    },
    {
        "TypeName": "PER",
        "Text": "Chuck",
        "Start": 0,
        "End": 5
    },
    {
        "TypeName": "ORG",
        "Text": "Alan 's",
        "Start": 48,
        "End": 55
    }
]