echo 'digraph {

"Keiichi Morisato" -> "Megumi Morisato" [taillabel = "Younger Sister of"]
"Belldandy" -> "Keiichi Morisato" [taillabel = "In love with"]
"Megumi Morisato" -> "Keiichi Morisato" [taillabel = "Older Brother of"]
}' | dot -Tsvg > output.svg