echo 'digraph {

"Keisuke Kimura" -> "Youko Inoue" [taillabel = "Girlfriend of"]
"Hiromi Nozawa" -> "Keisuke Kimura" [taillabel = "Tutor of"]
"Youko Inoue" -> "Keisuke Kimura" [taillabel = "Boyfriend of"]
}' | dot -Tsvg > output.svg