Problem: The personal copying exemption in the copyright law of EU member states stems from the EU Copyright Directive of 2001, which is generally devised to allow EU members to enact laws sanctioning making copies without authorization, as long as they are for personal, noncommerical use. The Copyright Directive was not intended to legitimize file-sharing, but rather the common practice of space shifting copyright-protected content from a legally purchased CD (for example) to certain kinds of devices and media, provided rights holders are compensated and no copy protection measures are circumvented. Rights-holder compensation takes various forms, depending on the country, but is generally either a levy on "recording" devices and media, or a tax on the content itself. In some countries, such as Canada, the applicability of such laws to copying onto general-purpose storage devices like computer hard drives, portable media players, and phones, for which no levies are collected, has been the subject of debate and further efforts to reform copyright law.
What was the directive NOT intended for?
The answer is the following: legitimize file-sharing

Problem: Geography effects solar energy potential because areas that are closer to the equator have a greater amount of solar radiation. However, the use of photovoltaics that can follow the position of the sun can significantly increase the solar energy potential in areas that are farther from the equator. Time variation effects the potential of solar energy because during the nighttime there is little solar radiation on the surface of the Earth for solar panels to absorb. This limits the amount of energy that solar panels can absorb in one day. Cloud cover can effect the potential of solar panels because clouds block incoming light from the sun and reduce the light available for solar cells.
Why does time have an effect of the amount of available solar energy?
The answer is the following: during the nighttime there is little solar radiation on the surface of the Earth for solar panels to absorb

Problem: Due to insistence by the International Federation of Association Football (FIFA), the international governing body of football, that domestic leagues reduce the number of games clubs played, the number of clubs was reduced to 20 in 1995 when four teams were relegated from the league and only two teams promoted. On 8 June 2006, FIFA requested that all major European leagues, including Italy's Serie A and Spain's La Liga be reduced to 18 teams by the start of the 2007–08 season. The Premier League responded by announcing their intention to resist such a reduction. Ultimately, the 2007–08 season kicked off again with 20 teams.
In 1995, what was the number of clubs in the league reduced to?
The answer is the following: 20

Problem: The Brazilian federal constitution states that the power to enter into treaties is vested in the president and that such treaties must be approved by Congress (articles 84, clause VIII, and 49, clause I). In practice, this has been interpreted as meaning that the executive branch is free to negotiate and sign a treaty, but its ratification by the president is contingent upon the prior approval of Congress. Additionally, the Federal Supreme Court has ruled that, following ratification and entry into force, a treaty must be incorporated into domestic law by means of a presidential decree published in the federal register in order to be valid in Brazil and applicable by the Brazilian authorities.
What part of the Brazilian federal consitution states that the power to enter into treaties is vested in the president and that such treaties must be approved by Congress?
The answer is the following:
articles 84, clause VIII, and 49, clause I