Input: Read this: Glacial abrasion is commonly characterized by glacial striations. Glaciers produce these when they contain large boulders that carve long scratches in the bedrock. By mapping the direction of the striations, researchers can determine the direction of the glacier's movement. Similar to striations are chatter marks, lines of crescent-shape depressions in the rock underlying a glacier. They are formed by abrasion when boulders in the glacier are repeatedly caught and released as they are dragged along the bedrock.
Question: How are chatter marks formed?

Output: abrasion when boulders in the glacier are repeatedly caught and released

Input: Read this: The original services of an inn are now also available at other establishments, such as hotels, lodges, and motels, which focus more on lodging customers than on other services, although they usually provide meals; pubs, which are primarily alcohol-serving establishments; and restaurants and taverns, which serve food and drink. In North America, the lodging aspect of the word "inn" lives on in hotel brand names like Holiday Inn, and in some state laws that refer to lodging operators as innkeepers.
Question: What is a noted hotel brand throughout North America?

Output: Holiday Inn

Input: Read this: On 3 May 1966 it resumed printing news on the front page - previously the front page featured small advertisements, usually of interest to the moneyed classes in British society. In 1967, members of the Astor family sold the paper to Canadian publishing magnate Roy Thomson. His Thomson Corporation brought it under the same ownership as The Sunday Times to form Times Newspapers Limited.
Question: Which other newspaper was brought under the same ownership as The Times in 1967 to form Times Newspapers Limited?

Output: The Sunday Times

Input: Read this: The first department store in the Philippines is the Hoskyn's Department Store of Hoskyn & Co. established in 1877 in Iloilo by the Englishman Henry Hoskyn, nephew of Nicholas Loney, the first British vice-consul in Iloilo. Some of the earliest department stores in the Philippines were located in Manila as early as 1898 with the opening of the American Bazaar, which was later named Beck's. During the course of the American occupation of the Philippines, many department stores were built throughout the city, many of which were located in Escolta. Heacock's, a luxury department store, was considered as the best department store in the Orient. Other department stores included Aguinaldo's, La Puerta del Sol, Estrella del Norte, and the Crystal Arcade, all of which were destroyed during the Battle of Manila in 1945. After the war, department stores were once again alive with the establishment of Shoemart (now SM), and Rustan's. Since the foundation of these companies in the 1950s, there are now more than one hundred department stores to date. At present, due to the huge success of shopping malls, department stores in the Philippines usually are anchor tenants within malls. SM Supermalls and Robinsons Malls are two of the country's most prominent mall chains, all of which has Department Store sections.
Question: When was the last department store in the Philippines opened?

Output:
unanswerable