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    ],
    "normalized_identity_or_value": [],
    "policy_or_weighting": [
      {
        "path": "product.methodology",
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          "land_cover_rule": "Forest is published ET plus ST cover; OL is open, GL is grassland, and AL is agricultural percentage cover. no_pollen_data retains the source window while all modeled cover values are unavailable.",
          "cereal_rule": "High- and low-quality rows retain published Cerealia.t and Secale modeled pollen-cover values; no_pollen_data retains nulls. These are not observed crop acreage or proof of cultivation at the target.",
          "temporal_join_rule": "SEAD and aDNA context counts require both spatial proximity within 20 km and numeric interval overlap with the published LandClim window.",
          "target_coverage_rule": "Every ranked SVAR lake and named archaeological wetland stays in scope. Targets outside the governed LandClim grid retain a decision row but receive no fabricated temporal values.",
          "interpretation_rule": "Cross-proxy alignment is descriptive context. It does not identify a cause, migration route, farming event, or viable coring location."
        },
        "after": {
          "land_cover_rule": "Forest is published ET plus ST cover; OL is open, GL is grassland, and AL is agricultural percentage cover. no_pollen_data retains the source window while all modeled cover values are unavailable.",
          "cereal_rule": "High- and low-quality rows retain published Cerealia.t and Secale modeled pollen-cover values; no_pollen_data retains nulls. These are not observed crop acreage or proof of cultivation at the target.",
          "temporal_join_rule": "SEAD and aDNA context counts require both spatial proximity within 20 km and numeric interval overlap with the published LandClim window.",
          "target_coverage_rule": "Every governed named lake or wetland and every additional ranked SVAR lake stays in scope. Targets outside the governed LandClim grid retain a decision row but receive no fabricated temporal values.",
          "interpretation_rule": "Cross-proxy alignment is descriptive context. It does not identify a cause, migration route, farming event, or viable coring location."
        }
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    "admission_or_exclusion": [
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  },
  "interpretation": "This is a product and policy comparison between the named Git baseline and the current worktree. Unchanged direct source files and changed producer paths narrow the revision cause; they do not establish a historical landscape change."
}