echo 'digraph {

"Takuma Mamizuka" -> "Kazuma Mamizuka" [taillabel = "Twin Brother of"]
"Umi Mamizuka" -> "Kazuma Mamizuka" [taillabel = "Son of"]
"Kazuma Mamizuka" -> "Takuma Mamizuka" [taillabel = "Twin Brother of"]
"Umi Mamizuka" -> "Takuma Mamizuka" [taillabel = "Son of"]
"Kazuma Mamizuka" -> "Umi Mamizuka" [taillabel = "Mother of"]
"Takuma Mamizuka" -> "Umi Mamizuka" [taillabel = "Mother of"]
}' | dot -Tsvg > output.svg