def METHOD_NAME(context: Context, row: Item) -> Optional[str]:
    name = h.make_name(
        full=row.get("name"),
        first_name=row.get("forename"),
        last_name=row.get("surname"),
    )
    return context.make_id(
        "person",
        name,
        row["latvian_identity_number_masked"],
        row["birth_date"],
    )