Problem: In the 12th and 13th centuries, Europe produced economic growth and innovations in methods of production. Major technological advances included the invention of the windmill, the first mechanical clocks, the manufacture of distilled spirits, and the use of the astrolabe. Concave spectacles were invented around 1286 by an unknown Italian artisan, probably working in or near Pisa.
Near what city were concave spectacles invented?
The answer is the following: Pisa


The Chalukya Empire (Kannada: ಚಾಲುಕ್ಯರು [tʃaːɭukjə]) was an Indian royal dynasty that ruled large parts of southern and central India between the 6th and the 12th centuries. During this period, they ruled as three related yet individual dynasties. The earliest dynasty, known as the "Badami Chalukyas", ruled from Vatapi (modern Badami) from the middle of the 6th century. The Badami Chalukyas began to assert their independence at the decline of the Kadamba kingdom of Banavasi and rapidly rose to prominence during the reign of Pulakeshin II. The rule of the Chalukyas marks an important milestone in the history of South India and a golden age in the history of Karnataka. The political atmosphere in South India shifted from smaller kingdoms to large empires with the ascendancy of Badami Chalukyas. A Southern India-based kingdom took control and consolidated the entire region between the Kaveri and the Narmada rivers. The rise of this empire saw the birth of efficient administration, overseas trade and commerce and the development of new style of architecture called "Chalukyan architecture". The Chalukya dynasty ruled parts of southern and central India from Badami in Karnataka between 550 and 750, and then again from Kalyani between 970 and 1190.
What style of architecture developed during the Chaluka reigns? 
Chalukyan architecture


Input: Molotov%E2%80%93Ribbentrop Pact
Molotov declared in his report entitled "On the Foreign Policy of the Soviet Union" (31 October 1939) held on the fifth (extraordinary) session of the Supreme Soviet, that the Western "ruling circles" disguise their intentions with the pretext of defending democracy against Hitlerism, declaring "their aim in war with Germany is nothing more, nothing less than extermination of Hitlerism. [...] There is absolutely no justification for this kind of war. The ideology of Hitlerism, just like any other ideological system, can be accepted or rejected, this is a matter of political views. But everyone grasps, that an ideology can not be exterminated by force, must not be finished off with a war."

According to Molotov, what was the goal of the west?
Output: extermination of Hitlerism


Input: Article: West's musical career has been defined by frequent stylistic shifts, and has seen him develop and explore a variety of different musical approaches and genres throughout his work. When asked about his musical inspirations, he has named A Tribe Called Quest, Stevie Wonder, Michael Jackson, George Michael, LL Cool J, Phil Collins and Madonna as early interests. He has further described musician David Bowie as one of his "most important inspirations," and named producer Puff Daddy as the "most important cultural figure in my life." Early in his career, West pioneered a style of production dubbed "chipmunk soul" which utilized pitched-up vocal samples, usually from soul and R&B songs, along with his own drums and instrumentation. His first major release featuring his trademark soulful vocal sampling style was "This Can't Be Life", a track from Jay-Z’s The Dynasty: Roc La Familia. West has said that Wu-Tang Clan producer RZA influenced him in his style, and has named Wu-Tang rappers Ghostface Killah and Ol' Dirty Bastard as inspirations. RZA spoke positively of the comparisons, stating in an interview for Rolling Stone, "All good. I got super respect for Kanye [...] [he] is going to inspire people to be like him." West further developed his style on his 2004 debut album, The College Dropout. After a rough version was leaked, he meticulously refined the production, adding string arrangements, gospel choirs, and improved drum programming.

Now answer this question: What artist was named by Kanye West to be his "most important inspiration"?

Output: David Bowie


Article: There are three classes of components for oxide glasses: network formers, intermediates, and modifiers. The network formers (silicon, boron, germanium) form a highly cross-linked network of chemical bonds. The intermediates (titanium, aluminium, zirconium, beryllium, magnesium, zinc) can act as both network formers and modifiers, according to the glass composition. The modifiers (calcium, lead, lithium, sodium, potassium) alter the network structure; they are usually present as ions, compensated by nearby non-bridging oxygen atoms, bound by one covalent bond to the glass network and holding one negative charge to compensate for the positive ion nearby. Some elements can play multiple roles; e.g. lead can act both as a network former (Pb4+ replacing Si4+), or as a modifier.

Question: What type of chemical attachment connects ions to the network?
Ans: covalent bond


Input: Josip Broz Tito
During his life and especially in the first year after his death, several places were named after Tito. Several of these places have since returned to their original names, such as Podgorica, formerly Titograd (though Podgorica's international airport is still identified by the code TGD), and Užice, formerly Titovo Užice, which reverted to its original name in 1992. Streets in Belgrade, the capital, have all reverted to their original pre–World War II and pre-communist names as well. In 2004, Antun Augustinčić's statue of Broz in his birthplace of Kumrovec was decapitated in an explosion. It was subsequently repaired. Twice in 2008, protests took place in Zagreb's Marshal Tito Square, organized by a group called Circle for the Square (Krug za Trg), with an aim to force the city government to rename it to its previous name, while a counter-protest by Citizens' Initiative Against Ustašism (Građanska inicijativa protiv ustaštva) accused the "Circle for the Square" of historical revisionism and neo-fascism. Croatian president Stjepan Mesić criticized the demonstration to change the name. In the Croatian coastal city of Opatija the main street (also its longest street) still bears the name of Marshal Tito, as do streets in numerous towns in Serbia, mostly in the country's north. One of the main streets in downtown Sarajevo is called Marshal Tito Street, and Tito's statue in a park in front of the university campus (ex. JNA barrack "Maršal Tito") in Marijin Dvor is a place where Bosnians and Sarajevans still today commemorate and pay tribute to Tito (image on the right). The largest Tito monument in the world, about 10 m (33 ft) high, is located at Tito Square (Slovene: Titov trg), the central square in Velenje, Slovenia. One of the main bridges in Slovenia's second largest city of Maribor is Tito Bridge (Titov most). The central square in Koper, the largest Slovenian port city, is as well named Tito Square.

When did Uziece revert to its original name?
Output:
1992