echo 'digraph {

"Ujiyasu Houjou" -> "Souun Houjou" [taillabel = "Mother of"]
"Ujimasa Hojo" -> "Souun Houjou" [taillabel = "Mother of"]
"Souun Houjou" -> "Ujiyasu Houjou" [taillabel = "Daughter of"]
"Souun Houjou" -> "Ujimasa Hojo" [taillabel = "Daughter of"]
}' | dot -Tsvg > output.svg