{
  "nodes": [
    [
      1.6,
      6,
      "Field theory"
    ],
    [
      5,
      6,
      "Background history"
    ],
    [
      8.4,
      6,
      "Particle ratios"
    ],
    [
      3,
      4,
      "Nuclear reactions"
    ],
    [
      7,
      4,
      "Molecular response"
    ],
    [
      3,
      2.3,
      "Stellar release"
    ],
    [
      7,
      2.3,
      "Chemical function"
    ],
    [
      5,
      0.7,
      "Emergence and detection"
    ]
  ],
  "edges": [
    [
      0,
      1
    ],
    [
      1,
      2
    ],
    [
      2,
      3
    ],
    [
      2,
      4
    ],
    [
      3,
      5
    ],
    [
      4,
      6
    ],
    [
      5,
      7
    ],
    [
      6,
      7
    ]
  ]
}