echo 'digraph {

"Billy Batson" -> "Mary Batson" [taillabel = "Sister of"]
"Owlman" -> "Mary Batson" [taillabel = "Lover of"]
"Diana Prince" -> "Mary Batson" [taillabel = "Expy of"]
"Mary Batson" -> "Billy Batson" [taillabel = "Brother of"]
"Mary Batson" -> "Diana Prince" [taillabel = "Expy of"]
"Donna Troy" -> "Diana Prince" [taillabel = "Adoptive Sister of"]
}' | dot -Tsvg > output.svg