echo 'digraph {

"Shinichi Izumi" -> "Kazuyuki Izumi" [taillabel = "Father of"]
"Kazuyuki Izumi" -> "Shinichi Izumi" [taillabel = "son of"]
"Nobuko Izumi" -> "Shinichi Izumi" [taillabel = "son of"]
}' | dot -Tsvg > output.svg