echo 'digraph {

"Gardar" -> "Arnheid" [taillabel = "Wife of"]
"Hjalti" -> "Arnheid" [taillabel = "Mother of"]
"Arnheid" -> "Gardar" [taillabel = "Husband of"]
"Arnheid" -> "Hjalti" [taillabel = "Son of"]
"Gardar" -> "Hjalti" [taillabel = "Son of"]
}' | dot -Tsvg > output.svg