{
    "classifications": [
        {
            "column": "Company Name",
            "role": "identifier",
            "confidence": 0.8,
            "reason": "Nearly unique per row (94 of 95), names the funded company and identifies the row"
        },
        {
            "column": "Founded",
            "role": "dimension",
            "confidence": 0.9,
            "reason": "Year of founding, used to group or filter"
        },
        {
            "column": "Location",
            "role": "dimension",
            "confidence": 0.9,
            "reason": "City or region label with medium cardinality, used for slicing (data is messy)"
        },
        {
            "column": "Sector",
            "role": "dimension",
            "confidence": 0.9,
            "reason": "Industry category used for grouping"
        },
        {
            "column": "What it does",
            "role": "attribute",
            "confidence": 0.95,
            "reason": "Free-text description, unique per row"
        },
        {
            "column": "Founders",
            "role": "attribute",
            "confidence": 0.9,
            "reason": "Free-form list of founder names, displayed only"
        },
        {
            "column": "Investor",
            "role": "attribute",
            "confidence": 0.7,
            "reason": "Free-form text listing investors, often multiple per row, not suited to grouping"
        },
        {
            "column": "Amount",
            "role": "measure",
            "confidence": 0.85,
            "reason": "Funding amount in dollars, aggregated with sum/avg though stored as a string"
        },
        {
            "column": "Stage",
            "role": "dimension",
            "confidence": 0.95,
            "reason": "Funding round category with low cardinality"
        }
    ]
}