Lamme Goedzak is a character in Charles De Coster's novel "The Legend of Thyl Ulenspiegel and Lamme Goedzak" (1867). He is the best friend of Thyl Ulenspiegel. While Ulenspiegel himself is derived from Dutch-German-Flemish folklore Lamme Goedzak is entirely created by De Coster. Despite this he has become one of the most recognizable Flemish folklore characters since.
Can we infer the following?
It took Charles De Coster a decade to finish writing "The Legend of Thyl Ulenspiegel and Lamme Goedzak"

Select from the following. -Yes. -It's impossible to say. -No.
The answer is:
It's impossible to say