echo 'digraph {

"Makoto Mita" -> "Youji Sakiyama" [taillabel = "Best friend of"]
"Tetsuo Shironuma" -> "Youji Sakiyama" [taillabel = "Friend of"]
"Youji Sakiyama" -> "Tetsuo Shironuma" [taillabel = "Friend of"]
"Youji Sakiyama" -> "Makoto Mita" [taillabel = "Best friend of"]
}' | dot -Tsvg > output.svg