Question: In what time period was the prequel to "Fate/stay night" named a best anime series?
Sentence (from "Fate/Zero"): "Fate/Zero" is set ten years before the events of "Fate/stay night", and tells the story of the Fourth Holy Grail War, a secret magical tournament held in Fuyuki City, Japan where seven magicians known as Masters summon Servants, reincarnations of legendary souls and heroes from all across time, where they fight in a deadly battle royale where the winner obtains the Holy Grail, a magical legendary chalice capable of granting wishes.
Relevant evidence: No