echo 'digraph {

"Diana Arsenyevna Balakireva" -> "Lyudmila Arsenyevna Balakireva" [taillabel = "Twin Sister of"]
"Lyudmila Arsenyevna Balakireva" -> "Diana Arsenyevna Balakireva" [taillabel = "Twin Sister of"]
}' | dot -Tsvg > output.svg