Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: The Testament of Tall Eagle
Product description: My name is John R. Fultz, and I'm a storyteller. My latest novel, THE TESTAMENT OF TALL EAGLE, is available from Ragnarok Publications. My Books of the Shaper trilogy includes the novels SEVEN PRINCES, SEVEN KINGS, and SEVEN SORCERERS (Orbit Books). THE REVELATIONS OF ZANG (01Publishing/FantasticBooks) collects 12 dark fantasy tales set in the magical World of Zang. I live in the North Bay Area, California, but I'm originally from Kentucky. My short fiction has appeared in anthologies such as YEAR'S BEST WEIRD FICTION, SHATTERED SHIELDS, THE WAY OF THE WIZARD, CTHULHU'S REIGN, THE BOOK OF CTHULHU II, THAT IS NOT DEAD, and DEEPEST, DARKEST EDEN: NEW TALES OF HYPERBOREA. I've also had stories in these fine magazines: BLACK GATE, WEIRD TALES, LIGHTSPEED, and SPACE & TIME. I've written comics for Boom Studios' ZOMBIE TALES and CTHULHU TALES. My graphic novel of epic fantasy PRIMORDIA (illustrated by the great Roel Wielinga) was published by Archaia Comics in an "ultimate hardcover edition" in 2012.
Product brand: Visit Amazon's John R. Fultz Page
Target attributes: Format
Answer: attribute: format
value: hardcover
source: product description