digraph dotfile{ 
node [fontname=arial,fontsize=10,color=Black,fontcolor=Blue];
edge [fontname=arial,fontsize=10,color=Darkgreen,fontcolor=Red];
rankdir=TB;

"?o" -> "?c" [label="ot:Orders_customer"];

"?o" -> "?who" [label="|| billing:dontask"];

"?o" -> "?who" [label="|| billing:dontTell"];

"?o" -> "?dunno" [label="|| billing:dontKnow"];

"?dunno" -> "?who" [label="|| billing:name"];




"?o" -> "?p" [label="ot:Orders_product"];

"?p" -> "\"other ring\"" [label="ot:Products_name"];

"?c" -> "\"Chip\"" [label="ot:Customers_givenName"];

"?c" -> "?last" [label="ot:Customers_familyName"];






}