echo 'digraph {

"Hirohisa Sugita" -> "Kiwako Nitta" [taillabel = "Girlfriend of"]
"Kiwako Nitta" -> "Hirohisa Sugita" [taillabel = "Boyfriend of"]
"Yoshirou Sawazaki" -> "Hirohisa Sugita" [taillabel = "Friend of"]
}' | dot -Tsvg > output.svg