echo 'digraph {

"Canute" -> "Sweyn" [taillabel = "Father of"]
"Harald" -> "Sweyn" [taillabel = "Father of"]
"Estrid" -> "Sweyn" [taillabel = "Father of"]
"Canute" -> "Estrid" [taillabel = "Younger Sister of"]
"Harald" -> "Estrid" [taillabel = "Younger Sister of"]
"Canute" -> "Harald" [taillabel = "Older Brother of"]
"Estrid" -> "Harald" [taillabel = "Older Brother of"]
}' | dot -Tsvg > output.svg