{
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    "type": "problem",
    "slug": "a-differential-inequality",
    "title": "A differential inequality",
    "language": "en"
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    {
      "key": "initial",
      "text": "Oral Mines-Ponts filière PC/MP 2010/2025 (RMS 121-2 699/RMS 136-1 759)",
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      "role": "SOURCE",
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