echo 'digraph {

"Phoebe" -> "Calvin" [taillabel = "Potential Husband of"]
"Barbara" -> "Phoebe" [taillabel = "Daughter of"]
"Simon" -> "Phoebe" [taillabel = "Daughter of"]
"Calvin" -> "Phoebe" [taillabel = "Potential Wife of"]
}' | dot -Tsvg > output.svg