Given the task definition, example input & output, solve the new input case.
In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
Example: Passage: Nearing London, Oliver encounters Jack Dawkins, a pickpocket more commonly known by the nickname the "Artful Dodger", and his sidekick, a boy of a humorous nature named Charley Bates, but Oliver's innocent and trusting nature fails to see any dishonesty in their actions. The Dodger provides Oliver with a free meal and tells him of a gentleman in London who will "give him lodgings for nothing, and never ask for change". Grateful for the unexpected assistance, Oliver follows the Dodger to the "old gentleman's" residence. In this way Oliver unwittingly falls in with an infamous Jewish criminal known as Fagin, the gentleman of whom the Artful Dodger spoke. Ensnared, Oliver lives with Fagin and his gang of juvenile pickpockets in their lair at Saffron Hill for some time, unaware of their criminal occupations. He believes they make wallets and handkerchiefs.
Output: Who believes Fagin's gang make wallets and handkerchiefs?.
This question is based on the following sentence in the passage "He believes they make wallets and handkerchiefs". It evaluates the understanding that the pronoun "he" refers to name "Oliver". You can ask questions like this one about most pronouns in a paragraph.

New input case for you: Passage: On the inaccessible island of Soay are sheep of a unique type, which lived as feral animals and belonged to the owner of the islands, not to the islanders.  These Soay sheep are believed to be remnants of the earliest sheep kept in Europe in the Neolithic Era, and are small, short-tailed, usually brown with white bellies, and have naturally moulting fleeces.  About 200 Soay sheep remain on Soay itself, and soon after the evacuation a second feral population of them was established on Hirta, which at that time had no sheep; these now number between 600 and 1,700. A few Soays have been exported to form breeding populations in other parts of the world, where they are valued for their hardiness, small size and unusual appearance. On Hirta and Soay, the sheep prefer the Plantago pastures, which grow well in locations exposed to sea spray and include red fescue (Festuca rubra), sea plantain (Plantago maritima) and sea pink (Armeria maritima).The St Kildans kept up to 2,000 of a different type of sheep on the islands of Hirta and Boreray.  These were a Hebridean variety of the Scottish Dunface, a primitive sheep probably similar to those kept throughout Britain during the Iron Age.  At the time of the evacuation all the islanders' sheep were removed from Hirta, but those on Boreray were left to become feral, and these are now regarded as a breed in their own right, the Boreray.  The Boreray is one of the rarest British sheep, and is one of the few remaining descendants of the Dunface (although some Scottish Blackface blood was introduced in the nineteenth century).
Output:
What is the type of sheep that was left during evacuations by the people who had up to 2,000 different types of sheep?