In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.

Input: Consider Input: The Battle of Passchendaele (German: Flandernschlacht, French: Deuxieme Bataille des Flandres), also known as the Third Battle of Ypres, was a campaign of the First World War, fought by the Allies against the German Empire. The battle took place on the Western Front, from July to November 1917, for control of the ridges south and east of the Belgian city of Ypres in West Flanders, as part of a strategy decided by the Allies at conferences in November 1916 and May 1917. Passchendaele lay on the last ridge east of Ypres, 5 mi (8.0 km) from a railway junction at Roulers, which was vital to the supply system of the German 4th Army. The next stage of the Allied plan was an advance to Thourout -- Couckelaere, to close the German-controlled railway running through Roulers and Thourout.

Output: what was the purpose of the third battle of ypres

Input: Consider Input: In the Philippines, the Philippine ZIP code is used by the Philippine Postal Corporation (Philpost) to simplify the distribution of mail. While in function it is similar to the ZIP code used in the United States, its form and usage are quite different. The use of ZIP codes in the Philippines is not mandatory, however it is highly recommended by Philpost that they be used. Also, unlike American ZIP codes, the Philippine code is a four-digit number representing two things: in Metro Manila, a barangay within a city or city district (as in the case for Manila), and outside Metro Manila, a town or city. Usually, more than one code is issued for areas within Metro Manila, and provincial areas are issued one code for each town and city, with some rare exceptions such as Dasmarinas, which has three ZIP codes (4114, 4115, and 4126) and Los Banos, which has two ZIP codes (4030 and 4031 for the University of the Philippines Los Banos).

Output: what is a postal code in the philippines

Input: Consider Input: Dari (Dari: (dai)) or Dari Persian ( Farsi-ye Dari (fsije dai)) or synonymously Farsi ( Farsi (fsi)) is the variety of the Persian language spoken in Afghanistan. Dari is the term officially recognized and promoted since 1964 by the Afghan government for the Persian language, hence, it is also known as Afghan Persian in many Western sources. This has resulted in a naming dispute. Many Persian speakers in Afghanistan prefer and use the name 'Farsi' and say the term Dari has been forced on them by the dominant Pashtun ethnic group as an attempt to distance Afghans from their cultural, linguistic, and historical ties to the Persian-speaking world, which includes Iran and Tajikistan.
Output: what's the difference between farsi and dari