graph: {
  node: { title: "a"  }
  node: { title: "b"  }
  node: { title: "c"  }
  node: { title: "d"  }
  node: { title: "e"  }

  edge: { sourcename: "a" targetname: "b"  }
  edge: { sourcename: "a" targetname: "c"  }
  edge: { sourcename: "b" targetname: "c"  }
  edge: { sourcename: "b" targetname: "d"  }
  edge: { sourcename: "c" targetname: "d"  }
  edge: { sourcename: "c" targetname: "e"  }
  edge: { sourcename: "e" targetname: "e"  }
}