Problem: On March 30, 2015, it was announced that Beyoncé is a co-owner, with various other music artists, in the music streaming service Tidal. The service specialises in lossless audio and high definition music videos. Beyoncé's husband Jay Z acquired the parent company of Tidal, Aspiro, in the first quarter of 2015. Including Beyoncé and Jay-Z, sixteen artist stakeholders (such as Kanye West, Rihanna, Madonna, Chris Martin, Nicki Minaj and more) co-own Tidal, with the majority owning a 3% equity stake. The idea of having an all artist owned streaming service was created by those involved to adapt to the increased demand for streaming within the current music industry, and to rival other streaming services such as Spotify, which have been criticised for their low payout of royalties. "The challenge is to get everyone to respect music again, to recognize its value", stated Jay-Z on the release of Tidal.
When was it discovered Beyonce was a co-owner of the music service, Tidal?
The answer is the following: March 30, 2015

Problem: After the American Revolutionary War, Richmond emerged as an important industrial center. To facilitate the transfer of cargo from the flat-bottomed bateaux above the fall line to the ocean-faring ships below, George Washington helped design the James River and Kanawha Canal in the 18th century to bypass Richmond's rapids, with the intent of providing a water route across the Appalachians to the Kanawha River. The legacy of the canal boatmen is represented by the figure in the center of the city flag. As a result of this and ample access to hydropower due to the falls, Richmond became home to some of the largest manufacturing facilities in the country, including iron works and flour mills, the largest facilities of their kind in the South. The resistance to the slave trade was growing by the mid-nineteenth century; in one famous case in 1848, Henry "Box" Brown made history by having himself nailed into a small box and shipped from Richmond to abolitionists in Philadelphia, Pennsylvania, escaping slavery.
What sort of economic center was Richmond in the wake of the American Revolution?
The answer is the following: industrial

Problem: The history of emotions has become an increasingly popular topic recently, with some scholars arguing that it is an essential category of analysis, not unlike class, race, or gender. Historians, like other social scientists, assume that emotions, feelings and their expressions are regulated in different ways by both different cultures and different historical times, and constructivist school of history claims even that some sentiments and meta-emotions, for example Schadenfreude, are learnt and not only regulated by culture. Historians of emotion trace and analyse the changing norms and rules of feeling, while examining emotional regimes, codes, and lexicons from social, cultural or political history perspectives. Others focus on the history of medicine, science or psychology. What somebody can and may feel (and show) in a given situation, towards certain people or things, depends on social norms and rules. It is thus historically variable and open to change. Several research centers have opened in the past few years in Germany, England, Spain, Sweden and Australia.
Along with Germany, England, Spain and Australia, where has a research center on the history of emotions recently opened?
The answer is the following: Sweden

Problem: Consent is also invalid if it is given by a representative who ignored restrictions he is subject to by his sovereign during the negotiations, if the other parties to the treaty were notified of those restrictions prior to his signing.[citation needed]
If a state's representative ignored restrictions he is subject to by his sovereign, what might that state's consent to a treaty be considered to be?
The answer is the following:
invalid