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" }
}