Question: In what time period was the prequel to "Fate/stay night" named a best anime series?
Sentence (from "Fate/Zero"): Fate/Zero (Japanese: フェイト/ゼロ , Hepburn: Feito/Zero ) is a Japanese light novel written by Gen Urobuchi, illustrated by Takashi Takeuchi, and is a prequel to all routes in Type-Moon's visual novel, "Fate/stay night".
Relevant evidence: Yes