echo 'digraph {

"Protagonist's Son" -> "Johnny" [taillabel = "Father of"]
"Protagonist's Daughter" -> "Johnny" [taillabel = "Father of"]
"Johnny" -> "Protagonist's Son" [taillabel = "Son of"]
"Annie" -> "Protagonist's Son" [taillabel = "Son of"]
"Mako" -> "Protagonist's Son" [taillabel = "Grandnephew of"]
"Johnny" -> "Protagonist's Daughter" [taillabel = "Daughter of"]
"Annie" -> "Protagonist's Daughter" [taillabel = "Daughter of"]
"Mako" -> "Protagonist's Daughter" [taillabel = "Grandniece of"]
}' | dot -Tsvg > output.svg