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.

[EX Q]: Many ancient civilizations alloyed metals for purely aesthetic purposes. In ancient Egypt and Mycenae, gold was often alloyed with copper to produce red-gold, or iron to produce a bright burgundy-gold. Gold was often found alloyed with silver or other metals to produce various types of colored gold. These metals were also used to strengthen each other, for more practical purposes. Copper was often added to silver to make sterling silver, increasing its strength for use in dishes, silverware, and other practical items. Quite often, precious metals were alloyed with less valuable substances as a means to deceive buyers. Around 250 BC, Archimedes was commissioned by the king to find a way to check the purity of the gold in a crown, leading to the famous bath-house shouting of "Eureka!" upon the discovery of Archimedes' principle.
[EX A]: Ancient civilizations often alloyed metals for what reason?

[EX Q]: Translation is a major obstacle when comparing different cultures. Many English terms lack equivalents in other languages, while concepts and words from other languages fail to be reflected in the English language. Translation and vocabulary obstacles are not limited to the English language. Language can force individuals to identify with a label that may or may not accurately reflect their true sexual orientation. Language can also be used to signal sexual orientation to others. The meaning of words referencing categories of sexual orientation are negotiated in the mass media in relation to social organization. New words may be brought into use to describe new terms or better describe complex interpretations of sexual orientation. Other words may pick up new layers or meaning. For example, the heterosexual Spanish terms marido and mujer for "husband" and "wife", respectively, have recently been replaced in Spain by the gender-neutral terms cónyuges or consortes meaning "spouses".
[EX A]: What tends to be a major obstacle when comparing cultures?

[EX Q]: Carnival is known as Crop Over and is Barbados's biggest festival. Its early beginnings were on the sugar cane plantations during the colonial period. Crop over began in 1688, and featured singing, dancing and accompaniment by shak-shak, banjo, triangle, fiddle, guitar, bottles filled with water and bones. Other traditions included climbing a greased pole, feasting and drinking competitions. Originally signaling the end of the yearly cane harvest, it evolved into a national festival. In the late 20th century, Crop Over began to closely mirror the Trinidad Carnival. Beginning in June, Crop Over runs until the first Monday in August when it culminates in the finale, The Grand Kadooment.
[EX A]:
What is the Carnival known as in Barbados?