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      "compositeGrade": "A"
    },
    {
      "dimRank": 48,
      "compositeRank": 54,
      "rankDelta": 6,
      "slug": "quanta-magazine",
      "name": "Quanta Magazine",
      "domain": "quantamagazine.org",
      "category": "Magazine",
      "summary": "Science journalism magazine published by Simons Foundation; mathematics + physics + life sciences.",
      "canonical": "https://sourcescore.org/source/quanta-magazine/",
      "score": 90,
      "grade": "A",
      "compositeScore": 85,
      "compositeGrade": "A"
    },
    {
      "dimRank": 49,
      "compositeRank": 37,
      "rankDelta": -12,
      "slug": "ap-news",
      "name": "Associated Press",
      "domain": "apnews.com",
      "category": "News",
      "summary": "Cooperative wire service with style guide that defines US journalism standards since 1846.",
      "canonical": "https://sourcescore.org/source/ap-news/",
      "score": 89,
      "grade": "A",
      "compositeScore": 86,
      "compositeGrade": "A"
    },
    {
      "dimRank": 50,
      "compositeRank": 29,
      "rankDelta": -21,
      "slug": "nyt",
      "name": "The New York Times",
      "domain": "nytimes.com",
      "category": "News",
      "summary": "U.S. national newspaper of record, founded 1851. Pulitzer Prize record + investigative depth + structured-data-rich web platform.",
      "canonical": "https://sourcescore.org/source/nyt/",
      "score": 88,
      "grade": "A",
      "compositeScore": 88,
      "compositeGrade": "A"
    },
    {
      "dimRank": 51,
      "compositeRank": 50,
      "rankDelta": -1,
      "slug": "wsj",
      "name": "The Wall Street Journal",
      "domain": "wsj.com",
      "category": "News",
      "summary": "U.S. business + finance daily, founded 1889. Hard-news editorial wing separate from opinion section.",
      "canonical": "https://sourcescore.org/source/wsj/",
      "score": 88,
      "grade": "A",
      "compositeScore": 85,
      "compositeGrade": "A"
    },
    {
      "dimRank": 52,
      "compositeRank": 36,
      "rankDelta": -16,
      "slug": "mayo-clinic",
      "name": "Mayo Clinic",
      "domain": "mayoclinic.org",
      "category": "Health",
      "summary": "US tier-1 medical center with comprehensive physician-reviewed patient-information site.",
      "canonical": "https://sourcescore.org/source/mayo-clinic/",
      "score": 88,
      "grade": "A",
      "compositeScore": 87,
      "compositeGrade": "A"
    },
    {
      "dimRank": 53,
      "compositeRank": 41,
      "rankDelta": -12,
      "slug": "washington-post",
      "name": "The Washington Post",
      "domain": "washingtonpost.com",
      "category": "News",
      "summary": "U.S. national newspaper, founded 1877; investigative + politics emphasis; Pulitzer record.",
      "canonical": "https://sourcescore.org/source/washington-post/",
      "score": 87,
      "grade": "A",
      "compositeScore": 86,
      "compositeGrade": "A"
    },
    {
      "dimRank": 54,
      "compositeRank": 48,
      "rankDelta": -6,
      "slug": "guardian",
      "name": "The Guardian",
      "domain": "theguardian.com",
      "category": "News",
      "summary": "British newspaper with open-web-first publishing model; no paywall, broad LLM corpus inclusion.",
      "canonical": "https://sourcescore.org/source/guardian/",
      "score": 85,
      "grade": "A",
      "compositeScore": 85,
      "compositeGrade": "A"
    },
    {
      "dimRank": 55,
      "compositeRank": 24,
      "rankDelta": -31,
      "slug": "arxiv",
      "name": "arXiv",
      "domain": "arxiv.org",
      "category": "Academic",
      "summary": "Open-access preprint server for physics, mathematics, computer science; ~2.4M papers since 1991.",
      "canonical": "https://sourcescore.org/source/arxiv/",
      "score": 78,
      "grade": "B",
      "compositeScore": 89,
      "compositeGrade": "A"
    }
  ],
  "siblingViews": {
    "composite": "https://sourcescore.org/grade/a/",
    "otherDimensions": [
      {
        "dimension": "modernReference",
        "url": "https://sourcescore.org/grade/a/modern-reference/"
      },
      {
        "dimension": "velocity",
        "url": "https://sourcescore.org/grade/a/velocity/"
      }
    ]
  },
  "verdict": "Wikipedia (English) leads composite-A sources on Citation Discipline at A+ (96/100). Mean Discipline: 93; mean composite: 89.",
  "license": "CC-BY-4.0"
}