Problem: While performing as a backup singer and dancer for the French disco artist Patrick Hernandez on his 1979 world tour, Madonna became romantically involved with musician Dan Gilroy. Together, they formed her first rock band, the Breakfast Club, for which Madonna sang and played drums and guitar. In 1980 or 1981 she left Breakfast Club and, with her former boyfriend Stephen Bray as drummer, formed the band Emmy. The two began writing songs together, and Madonna later decided to market herself as a solo act. Their music impressed DJ and record producer Mark Kamins who arranged a meeting between Madonna and Sire Records founder Seymour Stein.
Who did Madonna started seeing when she worked as a back up singer/dancer during Patrick Hernandez's tour?
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Answer: Dan Gilroy

Problem: Professor Aram Sinnreich, in his book The Piracy Crusade, states that the connection between declining music sails and the creation of peer to peer file sharing sites such as Napster is tenuous, based on correlation rather than causation. He argues that the industry at the time was undergoing artificial expansion, what he describes as a "'perfect bubble'a confluence of economic, political, and technological forces that drove the aggregate value of music sales to unprecedented heights at the end of the twentieth century".
What book didn't Professor Aram Sinnreich write?
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Answer: unanswerable

Problem: There has, however, been interest among railroad operators in returning to DC use at higher voltages than previously used. At the same voltage, DC often has less loss than AC, and for this reason high-voltage direct current is already used on some bulk power transmission lines. DC avoids the electromagnetic radiation inherent with AC, and on a railway this also reduces interference with signalling and communications and mitigates hypothetical EMF risks. DC also avoids the power factor problems of AC. Of particular interest to railroading is that DC can supply constant power with a single ungrounded wire. Constant power with AC requires three-phase transmission with at least two ungrounded wires. Another important consideration is that mains-frequency 3-phase AC must be carefully planned to avoid unbalanced phase loads. Parts of the system are supplied from different phases on the assumption that the total loads of the 3 phases will even out. At the phase break points between regions supplied from different phases, long insulated supply breaks are required to avoid them being shorted by rolling stock using more than one pantograph at a time. A few railroads have tried 3-phase but its substantial complexity has made single-phase standard practice despite the interruption in power flow that occurs twice every cycle. An experimental 6 kV DC railway was built in the Soviet Union.
What type of electric power garantees lesser loss?
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Answer:
DC