echo 'digraph {

"Natasha Andreyevich Arensky" -> "Anastasia Andreyevich Arensky" [taillabel = "Older sister of"]
"Anastasia Andreyevich Arensky" -> "Natasha Andreyevich Arensky" [taillabel = "Younger Sister of"]
}' | dot -Tsvg > output.svg