public string Serialize(CogniPy.CNL.DL.Paragraph p) { signature = new HashSet <Tuple <EntityKind, string> >(); dataValues = new HashSet <Tuple <string, string, string> >(); foundValues = new Dictionary <string, Value>(); dependentAttrs = new Dictionary <string, HashSet <string> >(); instanceValues = new List <InstanceValue>(); return(p.accept(this) as string); }