Question: Between St. John's water dog and the Polish Hunting Dog which was known to be a landrace bred for a specific purpose? 

Context paragraphs:
German Spaniel: The German Spaniel, also known as the Deutscher Wachtelhund (German quail dog), is a breed of dog that was developed in Germany around 1890, and is used as a hunting dog.  Descended from the old German breed, the Stoeberer (lit.  "rummager"), which became popular with commoners following the Revolutions of 1848 in the German states, who required a versatile hunting dog.  Stoeberer is now a type of hunting dog in Germany with the Wachtelhund being its sole member.  The breed is not very well known outside of Germany, but was recognised by the United Kennel Club in 1996.

Parafiscal tax: A parafiscal tax is a tax levied for specific purpose, a tax on a specific product or service by which a government raises money for a specific purpose.  The money raised is usually paid to a body other than the national tax authority.

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.

St. John's water dog: The St. John's water dog, also known as the St. John’s dog or the lesser Newfoundland, was a landrace (a dog bred for a purpose, not pedigree or appearance) of domestic dog from Newfoundland.  Little is known of the types that went into its genetic makeup, although it was probably a random-bred mix of old English, Irish and Portuguese working dogs.  The number of St. John's water dogs started declining by the start of the 20th century.  By the early 1980s, the variety was extinct.

Polish Hunting Dog: The Polish Hunting Dog, or formerly Polish Scenthound (Polish: "Gończy Polski" ) is a breed of scent hound originating in Poland.

Import Surtaxes: Import Surtaxes (Import Surcharge), also known as special tariffs, which is an extra tax after the normal import tax of /imported goods levied by importing countries.But the extra tax is for some purposes.  Import Surtaxes is different from import duty,which is not reflected in the customs tariff, and is set for a specific purpose.  It often depends on their level of taxation which is the specific purpose for collection.  It is usually temporary or one-off.

Finnish Spitz: A Finnish Spitz (Finnish language: "Suomenpystykorva") is a breed of dog originating in Finland.  The breed was originally bred to hunt all types of game from squirrels and other rodents to bears.  It is a "bark pointer", indicating the position of game by barking, and drawing the game animal's attention to itself, allowing an easier approach for the hunter.  Its original game hunting purpose was to point to game that fled into trees, such as grouse, and capercaillies, but it also serves well for hunting elk.  Some individuals have even been known to go after a bear.  In its native country, the breed is still mostly used as a hunting dog.  The breed is friendly and in general loves children, so it is suitable for domestic life.  The Finnish Spitz has been the national dog of Finland since 1979.

Mountain Cur: The Mountain Cur is a type of working dog that is bred specifically for treeing and trailing small game, like squirrel and raccoons.  They are also used for hunting and baying big game like bear and wild boar as well as being an all-purpose farm dog.  Curs are a member of the Hound group, and the Mountain Cur is one of several varieties of cur.  It can also be used as a water dog.  Mainly bred in Ohio, Kentucky, Virginia, and Tennessee, it has been registered with the United Kennel Club since 1998.  The Mountain Cur Breeder's Association was formed in 1957.

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.

Wetterhoun: The Wetterhoun (FCI No.221, translated into English as the Frisian Water Dog) is a breed of dog traditionally used as a hunting dog for hunting small mammals and waterfowl in the province of Fryslan in the Netherlands.  The name of the dog comes from the West Frisian "Wetterhûn" meaning "water dog."  Plural of Wetterhoun is Wetterhounen in Dutch.  The breed may also be called the "Otterhoun" (not to be confused with the Otterhound) or "Dutch Spaniel", although it is not a Spaniel-type dog.

Supporting paragraphs: St. John's water dog Polish Hunting Dog
Answer: St. John's water dog