echo 'digraph {

"Kaname Tanuma" -> "Tanuma's father" [taillabel = "Father of"]
"Tanuma's father" -> "Kaname Tanuma" [taillabel = "son of"]
"Takashi Natsume" -> "Kaname Tanuma" [taillabel = "Friend of"]
}' | dot -Tsvg > output.svg