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.

[Q]: Paper is often characterized by weight. In the United States, the weight assigned to a paper is the weight of a ream, 500 sheets, of varying "basic sizes", before the paper is cut into the size it is sold to end customers. For example, a ream of 20 lb, 8.5 in × 11 in (216 mm × 279 mm) paper weighs 5 pounds, because it has been cut from a larger sheet into four pieces. In the United States, printing paper is generally 20 lb, 24 lb, or 32 lb at most. Cover stock is generally 68 lb, and 110 lb or more is considered card stock.
[A]: What characteristic is paper usually classified by?


[Q]: Gaddafi's ideological worldview was moulded by his environment, namely his Islamic faith, his Bedouin upbringing, and his disgust at the actions of European colonialists in Libya. He was driven by a sense of "divine mission", believing himself a conduit of Allah's will, and thought that he must achieve his goals "no matter what the cost". Raised within the Sunni branch of Islam, Gaddafi called for the implementation of sharia within Libya. He desired unity across the Islamic world, and encouraged the propagation of the faith elsewhere. On a 2010 visit to Italy, he paid a modelling agency to find 200 young Italian women for a lecture he gave urging them to convert. He also funded the construction and renovation of two mosques in Africa, including Uganda's Kampala Mosque. He nevertheless clashed with conservative Libyan clerics as to his interpretation of Islam. Many criticised his attempts to encourage women to enter traditionally male-only sectors of society, such as the armed forces. Gaddafi was keen to improve women's status, though saw the sexes as "separate but equal" and therefore felt women should usually remain in traditional roles.
[A]: What variety of Islam was Gaddafi raised in?


[Q]: Electrochemical migration (ECM) is the growth of conductive metal filaments on or in a printed circuit board (PCB) under the influence of a DC voltage bias. Silver, zinc, and aluminum are known to grow whiskers under the influence of an electric field. Silver also grows conducting surface paths in the presence of halide and other ions, making it a poor choice for electronics use. Tin will grow "whiskers" due to tension in the plated surface. Tin-Lead or solder plating also grows whiskers, only reduced by the percentage Tin replaced. Reflow to melt solder or tin plate to relieve surface stress lowers whisker incidence. Another coating issue is tin pest, the transformation of tin to a powdery allotrope at low temperature.
[A]:
What's the process whereby metal filaments are grown on or in a PCB via DC voltage?