Question: Lorentz & Sakarias was a group that has collaborated with the actor best known for which role in the series "Vikings"?
Sentence (from "Nathan Fillion"): Nathan Christopher Fillion ( ; born March 27, 1971) is a Canadian-American actor and voice actor best known for his role as Richard Castle on the ABC series "Castle", as well as his earlier portrayal of the lead role of Captain Malcolm Reynolds in the television series "Firefly" and its feature film continuation, "Serenity".
Relevant evidence: No