echo 'digraph {

"Kurumi Tomonaga" -> "Azuki Tomonaga" [taillabel = "Older Sister of"]
"Yuuta Tomonaga" -> "Azuki Tomonaga" [taillabel = "Older Sister of"]
"Kurumi Tomonaga" -> "Yuuta Tomonaga" [taillabel = "Younger Brother of"]
"Azuki Tomonaga" -> "Yuuta Tomonaga" [taillabel = "Younger Brother of"]
"Azuki Tomonaga" -> "Kurumi Tomonaga" [taillabel = "Younger Sister of"]
"Yuuta Tomonaga" -> "Kurumi Tomonaga" [taillabel = "Older Sister of"]
}' | dot -Tsvg > output.svg