The Four Shelves: Vásquez, Lindqvist, Tanaka, and Okafor

Four authors — Vásquez, Lindqvist, Tanaka, and Okafor — each have exactly one genre, binding, and bookmark, and no two share any of them. Match each author to their genre, binding, and bookmark from these clues: 1. The science-fiction writer is the author with the paperback. 2. Lindqvist is not the memoirist. 3. The mystery writer is the author with the spiral-bound edition. 4. The poet is the author with the boxed set. 5. The author with the paperback is the author whose book holds a ticket stub. 6. Tanaka is not the author whose book holds a pressed leaf. 7. Tanaka is not the mystery writer. 8. Lindqvist is not the author whose book holds a ribbon bookmark. 9. The author with the boxed set is the author whose book holds a pressed leaf. 10. Vásquez is not the author whose book holds a ribbon bookmark. 11. Lindqvist is not the author whose book holds a pressed leaf. 12. The author with the spiral-bound edition is the author whose book holds a ribbon bookmark.