This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

Example Input: The city remained in the hands of Christian troops until 1102, when the Almoravids retook the city and restored the Muslim religion. Although the self-styled 'Emperor of All Spain', Alfonso VI of Leon and Castile, drove them from the city, he was not strong enough to hold it. The Christians set it afire before abandoning it, and the Almoravid Masdali took possession on 5 May 1109. The event was commemorated in a poem by Ibn Khafaja in which he thanked Yusuf ibn Tashfin for the city's liberation.The declining power of the Almoravids coincided with the rise of a new dynasty in North Africa, the Almohads, who seized control of the peninsula from the year 1145, although their entry into Valencia was deterred by Ibn Mardanis, King of Valencia and Murcia until 1171, at which time the city finally fell to the North Africans. The two Muslim dynasties would rule Valencia for more than a century.
Example Output: In what year did Christian troops lose control of Valencia?

Example Input: In 1998, UNICEF reported that Ivory Coast farmers used enslaved children many from surrounding countries. In late 2000 a BBC documentary reported the use of enslaved children in the production of cocoathe main ingredient in chocolate in West Africa. Other media followed by reporting widespread child slavery and child trafficking in the production of cocoa. In 2001, the US State Department estimated there were 15,000 child slaves cocoa, cotton and coffee farms in the Ivory Coast, and the Chocolate Manufacturers Association acknowledged that child slavery is used in the cocoa harvest.[not in citation given][better source needed]
Example Output: Who reported Ivory Coast farmers usage of child labour?

Example Input: Hans Bielenstein writes that as far back as the Han dynasty (202 BCE220 CE), the Han Chinese government "maintained the fiction" that the foreign officials administering the various "Dependent States" and oasis city-states of the Western Regions (composed of the Tarim Basin and oasis of Turpan) were true Han representatives due to the Han government's conferral of Chinese seals and seal cords to them.
Example Output:
What was the western regions composed of?