Question: Which dog breed, Cirneco dell'Etna or Flat-Coated Retriever, is primarily built for endurance over harsh terrain?

full_context: Document 1: Chesapeake Bay Retriever: The Chesapeake Bay Retriever is a large-sized breed of dog belonging to the Retriever, Gundog, and Sporting breed groups. Members of the breed may also be referred to as a Chessie, CBR, or Chesapeake. The breed was developed in the United States Chesapeake Bay area during the 19th century. Historically used by area market hunters to retrieve waterfowl, it is primarily a family pet and hunting companion. They are often known for their love of water and their ability to hunt. It is a medium to large sized dog similar in appearance to the Labrador Retriever. The Chesapeake have a wavy coat, rather than the Labrador's smooth coat. They are described as having a bright and happy disposition, courage, willingness to work, alertness, intelligence, and love of water as some of their characteristics.
Document 2: Argentata dell'Etna: The Argentata dell'Etna is an indigenous breed of domestic goat from the area of Mount Etna in the province of Catania and the Monti Peloritani in the province of Messina, in the Mediterranean island of Sicily, in southern Italy. It is raised mainly in that area, but also in the provinces of Enna and Palermo. It is named for the volcano and for its silvery grey coat. The origins of the breed are unknown; it shows similarities to the Garganica breed, and to other Italian grey breeds such as the Ciociara Grigia of Lazio and the Cilentana Grigia of Campania.
Document 3: Podenco Canario: Podenco Canario (In English: "Canary Islands Hound", "Canarian Warren Hound") is a breed of dog originally from the Canary Islands. The Podenco Canario is still used in the Canary Islands today in packs as a hunting dog, primarily used for rabbit hunting. The word "podenco" is Spanish for "hound". "Canario" means "Canarian" or "of the Canaries".
Document 4: Gun dog: Gun dogs, or bird dogs, are types of hunting dogs developed to assist hunters in finding and retrieving game, usually birds. Gun dogs are divided into three primary types: retrievers, flushing dogs, and pointing breeds. Some kennel clubs define a Gundog Group for gun dogs, while other kennel clubs include them in the Sporting Group.
Document 5: Segugio Italiano: The Segugio Italiano ] is an Italian breed of dog of the scenthound family. It comes in both short-haired and wire-haired varieties. It is thought to be an ancient breed, descended in pre-Roman eras from progenitor scenthounds in ancient Egypt. In 2009 ENCI (the Italian Kennel Club) registered 4,500 specimens of the short-haired variety and 1,740 wire-haired specimens, making this one of the top ten breeds in Italy.
Document 6: Portuguese Water Dog: The Portuguese Water Dog is a breed of working dog as classified by the American Kennel Club. Portuguese Water Dogs are originally from the Portuguese region of the Algarve, from where the breed expanded to all around Portugal's coast, where they were taught to herd fish into fishermen's nets, to retrieve lost tackle or broken nets, and to act as couriers from ship to ship, or ship to shore.
Document 7: Flat-Coated Retriever: The Flat-Coated Retriever is a gundog breed originating from the United Kingdom. It was developed as a retriever both on land and in the water.
Document 8: Cirneco dell'Etna: The Cirneco dell'Etna (] ; plural "Cirnechi" [tʃirˈnɛki] ) is a small breed of dog originally from Italian island of Sicily. This hound was historically used to hunt rabbits and can work for hours without food or water. The breed also has a keen sense of smell and is primarily built for endurance over harsh terrain such as that of Mount Etna. It is the smallest of the Mediterranean island hunting hounds, the others being the Pharaoh Hounds and Ibizan Hounds.
Document 9: FCI Retriever, Flushing Dog and Water Dog Group: The Retriever, Flushing Dog and Water Dog Group is a designation used only by the Fédération Cynologique Internationale for a group of dog breeds consisting of Retrievers, Flushing Dogs and Water Dogs.
Document 10: Tweed Water Spaniel: The Tweed Water Spaniel, or Tweed Spaniel, is a breed of dog extinct since the 19th century. It is best known for being involved in the early development of the modern Curly Coated Retriever and Golden Retriever breeds of dogs. They were described as a generally brown athletic dogs from the area around Berwick-upon-Tweed near the River Tweed and close to the Scottish Borders. A type of water dog, the breed was not well known outside the local area. This breed may have been created by crossing local water dogs with imported St. John's water dog, another breed which is also now extinct.
Document 11: Spanish Water Dog: The Spanish Water Dog (perro de agua español ) breed dates back several hundred years and has its origins most likely in Turkey from where it was imported into Spain as a general purpose sheepdog and guard. It is also used sometimes as a gundog, and is skilled at retrieval from water. The SWD has strong genetic links to other ancient water breeds such as the Portuguese Water Dog, the French Barbet and the Irish Water Spaniel.
Document 12: Curly Coated Retriever: The Curly Coated Retriever (often referred to as a Curly) is a breed of dog originally bred in England for upland bird and waterfowl hunting. It is the tallest of the retrievers and is easily distinguishable by the mass of tight curls covering its body. Curly Coated and Wavy Coated (now known as the Flat-Coated Retriever) were the first two recognised retriever breeds, established as early as 1860.
Document 13: Istrian Shorthaired Hound: The Istrian Short-haired Hound (FCI No. 151, original name is "Istarski Kratkodlaki Gonič") is a breed of dog from Istria in Croatia, descended from a very old type of scenthound. This hound is the slightly smaller counterpart to the longer-coated Istrian Coarse-haired Hound from the same region.
Document 14: Nero Siciliano: The Nero Siciliano is a breed of domestic pig from the Mediterranean island of Sicily, in southern Italy. It is raised mainly in the province of Messina, particularly in the Monti Nebrodi. For this reason it is often known as the Nero dei Nebrodi ; it may also be called Nero delle Madonie or Nero dell'Etna , for its association with the Madonie mountains and mount Etna respectively. It is one of the six autochthonous pig breeds recognised by the Ministero delle Politiche Agricole Alimentari e Forestali, the Italian ministry of agriculture and forestry.
Document 15: Pharaoh Hound: The Pharaoh Hound is a Maltese breed of dog and the national dog of Malta. In Maltese it is called Kelb tal-Fenek , which means "rabbit dog". It is traditionally used for hunting rabbit in the Maltese Islands.
ground_truth: Cirneco dell'Etna