Question: What is a medium-sized breed of herding dog, Great Dane or Armant ?

Context paragraphs:
Pembroke Welsh Corgi: The Pembroke Welsh Corgi ( ; Welsh for "dwarf dog") is a cattle herding dog breed which originated in Pembrokeshire, Wales.  It is one of two breeds known as a Welsh Corgi.  The other is the Cardigan Welsh Corgi, and both descend from the line that is the northern spitz-type dog (examples include that of the Siberian Husky).  Another theory is that Pembrokes are descended from the Swedish Vallhunds, which were crossed with the local Welsh herding dogs.  The Pembroke Welsh Corgi is the younger of the two Corgi breeds and is a separate and distinct breed from the Cardigan.  The corgi is one of the smallest dogs in the Herding Group.  Pembroke Welsh Corgis are famed for being the preferred breed of Queen Elizabeth II, who has owned more than 30 during her reign.  These dogs have been favored by British royalty for more than seventy years, but among British Commoners, have recently fallen into decline in terms of popularity and demand.

Cão da Serra de Aires: The Cão da Serra de Aires (FCI no. 93) is a medium-sized breed of dog of the herding dog type, and is one of the indigenous regional dogs of Portugal.  Called the "Portuguese Sheepdog" in English, the original name refers to the Serra de Aires, a mountain near Monforte in the Alentejo region, often mistaken winth the "Serra d'Aire" a range of hills or mountains marking the boundary between Ribatejo and Oeste, north of the Tagus river.  The breed is nicknamed the "cão macaco" (monkey dog, referring to the macaque or monkey) for its furry face and lively attitude.

Australian Cattle Dog: The Australian Cattle Dog (ACD), or simply Cattle Dog, is a breed of herding dog originally developed in Australia for droving cattle over long distances across rough terrain.  This breed is a medium-sized, short-coated dog that occurs in two main colour forms.  It has either brown or black hair distributed fairly evenly through a white coat, which gives the appearance of a "red" or "blue" dog.  It should not be confused with the Australian Shepherd, a similarly named but totally different breed.

Titan (dog): Titan (2005 – 31 March 2010) was an American male white Great Dane who was a holder of the Guinness World Record as the world's tallest dog.  His official height was 107.3 cm from the floor to his shoulder.  The previous holder was another Great Dane, Gibson who measured 107.2 cm , and died in August 2009.  During the nomination process, Titan, who suffered from several health conditions, fought off competition from a Newfoundland from North Dakota and another Great Dane, from Arizona.  On February 22, 2010 Titan was dethroned as world's tallest dog by Giant George, a Great Dane from Arizona.

Great Dane: The Great Dane is a large German breed of domestic dog known for its giant size.  The German name of the breed is "Deutsche Dogge", or German Mastiff.  The French name is "Dogue Allemand."

Australian Stumpy Tail Cattle Dog: The Australian Stumpy Tail Cattle Dog is a naturally bobtailed or tailless, medium-sized breed of Cattle Dog (not to be confused with the Australian Cattle Dog, aka "Queensland Heeler").  The Australian Stumpy Tail Cattle Dog was developed in Australia to herd cattle, and descends from crosses between European herding dogs and the Australian dingo.  The name is spelled both with hyphenation, as Australian Stumpy-Tail Cattle Dog, and without, and the shorter name Stump Tail Cattle Dog is also sometimes applied.

Collie: The collie is a distinctive type of herding dog, including many related landraces and standardised breeds.  The type originated in Scotland and Northern England.  The collie is a medium-sized, fairly lightly built dog, with a pointed snout.  Many types have a distinctive white pattern over the shoulders.  Collies are very active and agile, and most types of collies have a very strong herding instinct.  Collie breeds have spread through many parts of the world (especially Australia and North America) and have diversified into many varieties, sometimes with mixture from other dog types.  Some collie breeds have remained as working dogs, used for herding cattle, sheep and other livestock, while others are kept as pets, show dogs or for dog sports, in which they display great agility, stamina and trainability.  While the AKC has a breed they call "Collie", in fact collie dogs are a distinctive type of herding dog including many related landraces and formal breeds.  There are usually major distinctions between show dogs and those bred for herding trials or dog sports.  They typically display great agility, stamina and trainability and more importantly sagacity.

List of U.S. state dogs: Twelve states of the United States have designated an official state dog breed.  Maryland was the first state to name a dog breed as a state symbol, naming the Chesapeake Bay Retriever in 1964.  Pennsylvania followed the year after, naming the Great Dane as its official breed.  Dog breeds are mostly affiliated with the states that they originated in.  North Carolina chose the Plott Hound as it was the only dog breed indigenous to the state.

Armant (dog): Armant (also known as Egyptian Sheepdog) is a medium-sized breed of herding dog.

Brindlequin: Brindlequin is a type of coat coloring found only in the Great Dane, a dog breed classified among the mastiffs.  The coloring is a white coat with spots/patches (a pattern known as harlequin) where the patches are brindle.  Either the harlequin pattern or the brindle pattern is acceptable by most kennel clubs in the Great Dane, but a combination of them is not, thus a brindlequin coat will prevent a dog from receiving a prize at a dog show.

Supporting paragraphs: Armant (dog) Great Dane
Answer: Armant