echo 'digraph {

"Hiyoshi Gou" -> "Daijirou Gou" [taillabel = "Older Brother of"]
"Kenichi Gou" -> "Daijirou Gou" [taillabel = "Younger Brother of"]
"Daijirou Gou" -> "Hiyoshi Gou" [taillabel = "Younger Brother of"]
"Hiyoshi Gou" -> "Hiyoshi Gou" [taillabel = "Younger Brother of"]
"Daijirou Gou" -> "Kenichi Gou" [taillabel = "Older Brother of"]
"Hiyoshi Gou" -> "Kenichi Gou" [taillabel = "Older Brother of"]
}' | dot -Tsvg > output.svg