{
  "id": "c21-162172-d1be3bf2349073a4",
  "slug": "c21",
  "title": "C21",
  "qid": "Q1392805",
  "lead": "C-21, C 21, or C21 may refer to: * C21 Sako TRG M10 Sniper Weapon System, Canadian Armed Forces sniper rifle. * C21 (group), a Danish boy band ** C21 (album), 2003 * C-21 Dolphin, a flying boat used by the United States Army Air Corps * , a 1909 British C class submarine * Learjet C-21, an American military transport aircraft * Sauber C21, a 2002 racing car * Space Adventures C-21, a Russian design for a suborbital rocket plane for Space Adventures * Anal cancer (ICD-10 code: C21) * Center Game (Encyclopaedia of Chess Openings code: C21) * Caldwell 21 or NGC 4449, an irregular galaxy in the constellation Canes Venatici * Carbon-21 (C-21 or 21 C), an isotope of carbon * Catch 21, a television game show based on blackjack *",
  "body": "C-21, C 21, or C21 may refer to: C21 Sako TRG M10 Sniper Weapon System, Canadian Armed Forces sniper rifle. C21 (group), a Danish boy band C21 (album), 2003 C-21 Dolphin, a flying boat used by the United States Army Air Corps , a 1909 British C class submarine Learjet C-21, an American military transport aircraft Sauber C21, a 2002 racing car Space Adventures C-21, a Russian design for a suborbital rocket plane for Space Adventures Anal cancer (ICD-10 code: C21) Center Game (Encyclopaedia of Chess Openings code: C21) Caldwell 21 or NGC 4449, an irregular galaxy in the constellation Canes Venatici Carbon-21 (C-21 or 21 C), an isotope of carbon Catch 21, a television game show based on blackjack ==See also== 21st century Century 21 (disambiguation) 21c (disambiguation)",
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  "license": "CC BY-SA 4.0",
  "source_uri": "https://en.wikipedia.org/w/index.php?oldid=1158778746",
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    "id": "c21-162172-d1be3bf2349073a4",
    "type": "webpage",
    "title": "C21",
    "author": [
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        "family": "Anticloud FZ LLE",
        "literal": "Anticloud FZ LLE"
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    "container-title": "encyclopegia.org",
    "publisher": "Anticloud FZ LLE",
    "publisher-place": "Dubai, United Arab Emirates",
    "URL": "https://encyclopegia.org/a/c21",
    "issued": {
      "date-parts": [
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          2026,
          10,
          18
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    "accessed": {
      "date-parts": [
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          2026,
          11,
          13
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    "license": "CC BY-SA 4.0",
    "DOI": "eo1:c21-162172-d1be3bf2349073a4",
    "isBasedOn": "https://en.wikipedia.org/w/index.php?oldid=1158778746",
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