echo 'digraph {

"Momoko Murakami" -> "Akira Tobari" [taillabel = "Boyfriend of"]
"Sakura Murakami" -> "Momoko Murakami" [taillabel = "Sister of"]
"Akira Tobari" -> "Momoko Murakami" [taillabel = "Girlfriend of"]
}' | dot -Tsvg > output.svg