echo 'digraph {

"Ayuko Oka" -> "Kouhei Ueno" [taillabel = "Boyfriend of"]
"Mikoto Urabe" -> "Ayuko Oka" [taillabel = "Friend of#"]
"Kouhei Ueno" -> "Ayuko Oka" [taillabel = "Girlfriend of"]
}' | dot -Tsvg > output.svg