echo 'digraph {

"Katou-sensei" -> "Aya Kuroda" [taillabel = "Student of"]
"Mayumi Hashimoto" -> "Katou-sensei" [taillabel = "Teacher of"]
"Aya Kuroda" -> "Katou-sensei" [taillabel = "Teacher of"]
}' | dot -Tsvg > output.svg