Question: In which year did the artist, who illustrated "Multiverse: Exploring Poul Anderson's Worlds" win the Chesley Award for Artistic Achievement?
Sentence (from "Multiverse: Exploring Poul Anderson's Worlds"): Multiverse: Exploring Poul Anderson's Worlds is a gedenkschrift honoring science fiction and fantasy author Poul Anderson, in the form of an anthology of short stories and tributes edited by Greg Bear and Gardner Dozois.
Relevant evidence: No