echo 'digraph {

"Izumi Nase" -> "Hiroomi Nase" [taillabel = "Brother of"]
"Mitsuki Nase" -> "Hiroomi Nase" [taillabel = "Brother of"]
"Izumi Nase" -> "Mitsuki Nase" [taillabel = "Younger Sister of"]
"Hiroomi Nase" -> "Mitsuki Nase" [taillabel = "Sister of"]
}' | dot -Tsvg > output.svg