Input: Palermo
Today both the Papireto river and the Kemonia are covered up by buildings. However, the shape of the former watercourses can still be recognised today, because the streets that were built on them follow their shapes. Today the only waterway not drained yet is the Oreto river that divides the downtown of the city from the western uptown and the industrial districts. In the basins there were, though, many seasonal torrents that helped formed swampy plains, reclaimed during history; a good example of which can be found in the borough of Mondello.

Which two former rivers in Palermo are currently building sites?
Output: Papireto river and the Kemonia

Input: Article: Mainstream AC itself has evolved in a similar fashion over the years; traditional AC artists like Barbra Streisand, the Carpenters, Dionne Warwick, Barry Manilow, John Denver, and Olivia Newton-John found it harder to have major Top 40 hits as the 1980s wore on, and due to the influence of MTV, artists who were staples of the Contemporary Hit Radio format, such as Richard Marx, Michael Jackson, Bonnie Tyler, George Michael, Phil Collins, and Laura Branigan began crossing over to the AC charts with greater frequency. Collins has been described by AllMusic as "one of the most successful pop and adult contemporary singers of the '80s and beyond". However, with the combination of MTV and AC radio, adult contemporary appeared harder to define as a genre, with established soft-rock artists of the past still charting pop hits and receiving airplay alongside mainstream radio fare from newer artists at the time.

Now answer this question: Along with Richard Marx, Bonnie Tyler, George Michael, Phil Collins, and Laura Branigan, what artist was also frequently played on Contemporary Hit Radio stations?

Output: Michael Jackson

Article: Rurik led the Rus' until his death in about 879, bequeathing his kingdom to his kinsman, Prince Oleg, as regent for his young son, Igor. In 880-82, Oleg led a military force south along the Dnieper river, capturing Smolensk and Lyubech before reaching Kiev, where he deposed and killed Askold and Dir, proclaimed himself prince, and declared Kiev the "mother of Rus' cities." Oleg set about consolidating his power over the surrounding region and the riverways north to Novgorod, imposing tribute on the East Slav tribes. In 883, he conquered the Drevlians, imposing a fur tribute on them. By 885 he had subjugated the Poliane, Severiane, Vyatichi, and Radimichs, forbidding them to pay further tribute to the Khazars. Oleg continued to develop and expand a network of Rus' forts in Slav lands, begun by Rurik in the north.

Question: What year did Oleg conquer the Drevlians?
Ans: 883

Here is a question about this article: Polish composers of the following generation included virtuosi such as Moritz Moszkowski, but, in the opinion of J. Barrie Jones, his "one worthy successor" among his compatriots was Karol Szymanowski (18821937). Edvard Grieg, Antonin Dvorak, Isaac Albeniz, Pyotr Ilyich Tchaikovsky and Sergei Rachmaninoff, among others, are regarded by critics as having been influenced by Chopin's use of national modes and idioms. Alexander Scriabin was devoted to the music of Chopin, and his early published works include nineteen mazurkas, as well as numerous etudes and preludes; his teacher Nikolai Zverev drilled him in Chopin's works to improve his virtuosity as a performer. In the 20th century, composers who paid homage to (or in some cases parodied) the music of Chopin included George Crumb, Bohuslav Martinu, Darius Milhaud, Igor Stravinsky and Heitor Villa-Lobos.
What is the answer to this question: Who was Alexander Scriabin's teacher?
****
So... Nikolai Zverev

The problem: Answer a question about this article:
Portuguese pavement (in Portuguese, Calcada Portuguesa) is a kind of two-tone stone mosaic paving created in Portugal, and common throughout the Lusosphere. Most commonly taking the form of geometric patterns from the simple to the complex, it also is used to create complex pictorial mosaics in styles ranging from iconography to classicism and even modern design. In Portuguese-speaking countries, many cities have a large amount of their sidewalks and even, though far more occasionally, streets done in this mosaic form. Lisbon in particular maintains almost all walkways in this style.
Portuguese pavement is known by what other name?
****
The answer: Calcada Portuguesa

The problem: Answer a question about this article:
Executive power is vested, with exceptions and qualifications, in the President. By law (Section 2.) the president becomes the Commander in Chief of the Army and Navy, Militia of several states when called into service, has power to make treaties and appointments to office "with the Advice and Consent of the Senate," receive Ambassadors and Public Ministers, and "take care that the laws be faithfully executed" (Section 3.) By using these words, the Constitution does not require the president to personally enforce the law; rather, officers subordinate to the president may perform such duties. The Constitution empowers the president to ensure the faithful execution of the laws made by Congress and approved by the President. Congress may itself terminate such appointments, by impeachment, and restrict the president. Bodies such as the War Claims Commission, the Interstate Commerce Commission and the Federal Trade Commissionall quasi-judicialoften have direct Congressional oversight.
Who has the authority to make treaties?
****
The answer:
the President