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]: The original model Famicom featured two game controllers, both of which were hardwired to the back of the console. The second controller lacked the START and SELECT buttons, but featured a small microphone. Relatively few games made use of this feature. The earliest produced Famicom units initially had square A and B buttons. This was changed to the circular designs because of the square buttons being caught in the controller casing when pressed down and glitches within the hardware causing the system to freeze occasionally while playing a game.
[EX A]: How were the Famicom controllers attached to the console?

[EX Q]: Also of major note in Ciudad Vieja is the Plaza de la Constitución (or Plaza Matriz). During the first decades of Uruguayan independence this square was the main hub of city life. On the square are the Cabildo—the seat of colonial government—and the Montevideo Metropolitan Cathedral. The cathedral is the burial place of Fructuoso Rivera, Juan Antonio Lavalleja and Venancio Flores. Another notable square is Plaza Zabala with the equestrian statue of Bruno Mauricio de Zabala. On its south side, Palacio Taranco, once residence of the Ortiz Taranco brothers, is now the Museum of Decorative Arts. A few blocks northwest of Plaza Zabala is the Mercado del Puerto, another major tourist destination.
[EX A]:
What is also a major note in Ciudad Vieja?