Question: Are both Kai Hansen and Piotr Wiwczarek known for being guitarists for their respective bands?
Sentence (from "Piotr Wiwczarek"): Piotr Wiwczarek (born 22 October 1965 in Olsztyn, Poland), also known as Peter, (ex nickname Behemoth) is a Polish guitarist and vocalist who is the frontman for the death metal band Vader, as the only constant member of the band since its inception.
Relevant evidence: Yes