echo 'digraph {

"Yaya Tushan" -> "Rongrong Tushan" [taillabel = "Sister of"]
"Rongrong Tushan" -> "Yaya Tushan" [taillabel = "Sister of"]
"Susu Tushan" -> "Yaya Tushan" [taillabel = "Sister of"]
}' | dot -Tsvg > output.svg