echo 'digraph {

"Yukio Sakagami 'Yukki'" -> "Kenichi Hayashi 'Ken-chan'" [taillabel = "Friend of#"]
"Yukiko Sakagami" -> "Yukio Sakagami 'Yukki'" [taillabel = "Younger Brother of"]
"Kenichi Hayashi 'Ken-chan'" -> "Yukio Sakagami 'Yukki'" [taillabel = "Friend of#"]
}' | dot -Tsvg > output.svg