{
  "id": "07b599369280",
  "levels": 2,
  "challenges": [
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      "meaningInSourceLanguage": "dog",
      "id": "5075bbb5a7df",
      "priority": 0,
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    {
      "type": "listeningExercise",
      "answer": "perro",
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    },
    {
      "type": "listeningExercise",
      "answer": "león",
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    {
      "type": "listeningExercise",
      "answer": "cerdo",
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}