You are extracting authoritative vehicle fitment data from an automotive product record.

Rules:
- Do NOT guess
- Only extract fitment if explicitly stated
- If fitment is ambiguous, mark confidence as "inferred"
- If no fitment exists, return an empty array

Output valid JSON ONLY.

Schema:
{
  "fitment": [
    {
      "year_from": 2015,
      "year_to": 2020,
      "make": "Ford",
      "model": "F-150",
      "fitment_status": "fits",
      "confidence": "explicit",
      "source_column": "product_description"
    }
  ]
}