SEMANTIC HTML · ARCHIVED RESULTS

Semantic HTML.
Compare what tools preserve.

The same text. One markup change.
Two outputs to inspect, with evidence.

Explore an archived run from 20 September 2026, re-evaluated on 21 September. No extraction runs during your visit.

EXPLORE THE CONTROLLED CORPUS

Table

Trafilatura 2.2.0 · Extractor / reading tool · English document

All 42 comparisons

Values must match exactly in the same row. An XML caption is not a column header; a Markdown table does not prove the input’s HTML semantics. Test scope.

A

VARIANT A

Headers with th + scope

Output produced

Expected value row : Exact values, in order · Column headers : Explicit relationship · Row header : Relationship not demonstrated. Source

01 · The HTML change

<table><caption>Synthetic measurements</caption><thead><tr><th class="case-cell" scope="col">Indicator</th><th class="case-cell" scope="col">Unit</th><th class="case-cell" scope="col">Period</th><th class="case-cell" scope="col">Value</th></tr></thead><tbody><tr><th class="case-cell" scope="row">Response time</th><td class="case-cell">seconds</td><td class="case-cell">May 2026</td><td class="case-cell">1.8</td></tr></tbody></table>

Exact input excerpt · Original HTML ↓

02 · What the tool produces XML

…
.</p>
    <head rend="h2">Synthetic measurements</head>
    <table>
      <row>
        <cell role="head">Synthetic measurements</cell>
      </row>
      <row>
        <cell role="head">Indicator</cell>
        <cell role="head">Unit</cell>
        <cell role="head">Period</cell>
        <cell role="head">Value</cell>
      </row>
      <row>
        <cell>Response time</cell>
        <cell>seconds</cell>
        <cell>May 2026</cell>
        <cell>1.8</cell>
      </row>
    </table>
    <p>The conclusion must be read with its unit, period, scope and caveat. Finding a word in an output is not enough to prove that the relationship was preser
…

Excerpt identified by the corrected evaluator. Full output below.

03 · The documented observation

Expected value row
Exact values, in order
Column headers
Explicit relationship
Row header
Relationship not demonstrated
Output structure
Present

Verdict source: results.json · table-en-1 / trafilatura

Inspect the full evidence

The verdicts above come from corrected results.json. The raw file’s evaluation fields are historical and are not authoritative here.

results.json/cases/8/evaluation/relation/trafilatura

Corrected verdict, unchanged
{
  "status": "ok",
  "tool_class": "content_extractor",
  "format": "xml",
  "table_structure": "present",
  "expected_data_row": "exact_values_in_order",
  "column_header_relation": "explicit",
  "row_header_relation": "not_explicit",
  "column_labels": [
    "Indicator",
    "Unit",
    "Period",
    "Value"
  ],
  "data_values": [
    "Response time",
    "seconds",
    "May 2026",
    "1.8"
  ],
  "evidence": {
    "header_row": "<cell role=\"head\">Indicator</cell><cell role=\"head\">Unit</cell><cell role=\"head\">Period</cell><cell role=\"head\">Value</cell>",
    "data_row": "<cell>Response time</cell><cell>seconds</cell><cell>May 2026</cell><cell>1.8</cell>",
    "table_excerpt": "<table>\n      <row>\n        <cell role=\"head\">Synthetic measurements</cell>\n      </row>\n      <row>\n        <cell role=\"head\">Indicator</cell>\n        <cell role=\"head\">Unit</cell>\n        <cell role=\"head\">Period</cell>\n        <cell role=\"head\">Value</cell>\n      </row>\n      <row>\n        <cell>Response time</cell>\n        <cell>seconds</cell>\n        <cell>May 2026</cell>\n        <cell>1.8</cell>\n      </row>\n    </table>"
  },
  "output_field": "trafilatura.xml",
  "output_sha256": "6d29047970a22bb54d72b4d58bf6236608242f90a1a0636efa5672153f992560",
  "source_column_headers_explicit": true
}
Complete studied output field

trafilatura.xml

<doc fingerprint="7ac7dded2726fc7">
  <main>
    <head rend="h1">Offline protocol for preserving relationships</head>
    <p>This synthetic document compares two markups while text, order, classes and surroundings remain identical. The data are fictional and describe neither Edikka nor a client.</p>
    <head rend="h2">Synthetic measurements</head>
    <table>
      <row>
        <cell role="head">Synthetic measurements</cell>
      </row>
      <row>
        <cell role="head">Indicator</cell>
        <cell role="head">Unit</cell>
        <cell role="head">Period</cell>
        <cell role="head">Value</cell>
      </row>
      <row>
        <cell>Response time</cell>
        <cell>seconds</cell>
        <cell>May 2026</cell>
        <cell>1.8</cell>
      </row>
    </table>
    <p>The conclusion must be read with its unit, period, scope and caveat. Finding a word in an output is not enough to prove that the relationship was preserved.</p>
  </main>
  <comments/>
</doc>
Archived version and options

Trafilatura 2.2.0 · Execution 2026-09-20

{
  "version": "2.2.0",
  "configuration": {
    "include_comments": false,
    "include_links": true,
    "include_tables": true,
    "no_fallback": false,
    "favor_precision": false,
    "favor_recall": false,
    "formats": [
      "xml",
      "txt"
    ]
  }
}

Archived runner · Python options

SHA-256 hashes
HTML input
374211644b0d1ad2d4ae9647d84e7e3e518ff392b9f4aaa108e438677c2b05da
Evaluated output field
6d29047970a22bb54d72b4d58bf6236608242f90a1a0636efa5672153f992560

Complete raw output file ↗

B

VARIANT B

Ordinary td cells

Output produced

Expected value row : Exact values, in order · Column headers : Relationship not demonstrated · Row header : Relationship not demonstrated. Source

01 · The HTML change

<table><caption>Synthetic measurements</caption><thead><tr><td class="case-cell">Indicator</td><td class="case-cell">Unit</td><td class="case-cell">Period</td><td class="case-cell">Value</td></tr></thead><tbody><tr><td class="case-cell">Response time</td><td class="case-cell">seconds</td><td class="case-cell">May 2026</td><td class="case-cell">1.8</td></tr></tbody></table>

Exact input excerpt · Original HTML ↓

02 · What the tool produces XML

…
.</p>
    <head rend="h2">Synthetic measurements</head>
    <table>
      <row>
        <cell role="head">Synthetic measurements</cell>
      </row>
      <row>
        <cell>Indicator</cell>
        <cell>Unit</cell>
        <cell>Period</cell>
        <cell>Value</cell>
      </row>
      <row>
        <cell>Response time</cell>
        <cell>seconds</cell>
        <cell>May 2026</cell>
        <cell>1.8</cell>
      </row>
    </table>
    <p>The conclusion must be read with its unit, period, scope and caveat. Finding a word in an output is not enough to prove that the relationship was preserved.</p>
  </main>
  <comments/>
</doc>

Excerpt identified by the corrected evaluator. Full output below.

03 · The documented observation

Expected value row
Exact values, in order
Column headers
Relationship not demonstrated
Row header
Relationship not demonstrated
Output structure
Present

Verdict source: results.json · table-en-2 / trafilatura

Inspect the full evidence

The verdicts above come from corrected results.json. The raw file’s evaluation fields are historical and are not authoritative here.

results.json/cases/9/evaluation/relation/trafilatura

Corrected verdict, unchanged
{
  "status": "ok",
  "tool_class": "content_extractor",
  "format": "xml",
  "table_structure": "present",
  "expected_data_row": "exact_values_in_order",
  "column_header_relation": "not_explicit",
  "row_header_relation": "not_explicit",
  "column_labels": [
    "Indicator",
    "Unit",
    "Period",
    "Value"
  ],
  "data_values": [
    "Response time",
    "seconds",
    "May 2026",
    "1.8"
  ],
  "evidence": {
    "header_row": "<cell>Indicator</cell><cell>Unit</cell><cell>Period</cell><cell>Value</cell>",
    "data_row": "<cell>Response time</cell><cell>seconds</cell><cell>May 2026</cell><cell>1.8</cell>",
    "table_excerpt": "<table>\n      <row>\n        <cell role=\"head\">Synthetic measurements</cell>\n      </row>\n      <row>\n        <cell>Indicator</cell>\n        <cell>Unit</cell>\n        <cell>Period</cell>\n        <cell>Value</cell>\n      </row>\n      <row>\n        <cell>Response time</cell>\n        <cell>seconds</cell>\n        <cell>May 2026</cell>\n        <cell>1.8</cell>\n      </row>\n    </table>"
  },
  "output_field": "trafilatura.xml",
  "output_sha256": "c48a9fe2ad013cf64762a3e6f333849b056af44391f8c937ccfd8360a5da6459",
  "source_column_headers_explicit": false
}
Complete studied output field

trafilatura.xml

<doc fingerprint="7ac7dded2726fc7">
  <main>
    <head rend="h1">Offline protocol for preserving relationships</head>
    <p>This synthetic document compares two markups while text, order, classes and surroundings remain identical. The data are fictional and describe neither Edikka nor a client.</p>
    <head rend="h2">Synthetic measurements</head>
    <table>
      <row>
        <cell role="head">Synthetic measurements</cell>
      </row>
      <row>
        <cell>Indicator</cell>
        <cell>Unit</cell>
        <cell>Period</cell>
        <cell>Value</cell>
      </row>
      <row>
        <cell>Response time</cell>
        <cell>seconds</cell>
        <cell>May 2026</cell>
        <cell>1.8</cell>
      </row>
    </table>
    <p>The conclusion must be read with its unit, period, scope and caveat. Finding a word in an output is not enough to prove that the relationship was preserved.</p>
  </main>
  <comments/>
</doc>
Archived version and options

Trafilatura 2.2.0 · Execution 2026-09-20

{
  "version": "2.2.0",
  "configuration": {
    "include_comments": false,
    "include_links": true,
    "include_tables": true,
    "no_fallback": false,
    "favor_precision": false,
    "favor_recall": false,
    "formats": [
      "xml",
      "txt"
    ]
  }
}

Archived runner · Python options

SHA-256 hashes
HTML input
f047171076d291106cd77b19fe1195a11b287e101144a134317cf2a3f64dd654
Evaluated output field
c48a9fe2ad013cf64762a3e6f333849b056af44391f8c937ccfd8360a5da6459

Complete raw output file ↗

Identical text and isolated intervention within this pair, according to the protocol witnesses. Translations are not independent observations. View pair witnesses.

LOOK FURTHER

Every result has a scope.

These observations do not rank tools. They do not measure overall accessibility, search ranking, or understanding or citation by AI.

Claims excluded by the protocol