echo 'digraph {

"Hina Houjou" -> "China Houjou" [taillabel = "Sister of"]
"Mina Houjou" -> "China Houjou" [taillabel = "Sister of"]
"China Houjou" -> "Hina Houjou" [taillabel = "Sister of"]
"Mina Houjou" -> "Hina Houjou" [taillabel = "Sister of"]
"Hina Houjou" -> "Mina Houjou" [taillabel = "Sister of"]
"China Houjou" -> "Mina Houjou" [taillabel = "Sister of"]
}' | dot -Tsvg > output.svg