{
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    "focal_length": 3,
    "eye": [0,0,6],
    "up": [0,1,0],
    "look": [0,0,-1],
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  "objects": [
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      "material": "orange plastic"
    }
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    {
      "type": "directional",
      "direction": [0,0,-1],
      "color": [0.8,0.8,0.8]
    }
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      "name": "orange plastic",
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}