Question: What is the nationality of the thriller fiction author who used the Rose Line as inspiration for his well known 2003 novel?
Sentence (from "Rose Line"): Rose Line is a fictional name given to the Paris Meridian and to the sunlight line defining the exact time of Easter on the Gnomon of Saint-Sulpice, marked by a brass strip on the floor of the church, where the two are conflated, by Dan Brown in his 2003 novel "The Da Vinci Code".
Relevant evidence: Yes