echo 'digraph {

"Nobuko Ishihara" -> "Heikichi Nakao" [taillabel = "Boyfriend of"]
"Heikichi Nakao" -> "Nobuko Ishihara" [taillabel = "Girlfriend of"]
"Chiharu Tanaka" -> "Nobuko Ishihara" [taillabel = "Friend of"]
}' | dot -Tsvg > output.svg