Input: Read this: Sugar, starch, cotton, linen, hemp, some types of rope, wood and particle boards, papyrus and paper, vegetable oils, wax, and natural rubber are examples of commercially important materials made from plant tissues or their secondary products. Charcoal, a pure form of carbon made by pyrolysis of wood, has a long history as a metal-smelting fuel, as a filter material and adsorbent and as an artist's material and is one of the three ingredients of gunpowder. Cellulose, the world's most abundant organic polymer, can be converted into energy, fuels, materials and chemical feedstock. Products made from cellulose include rayon and cellophane, wallpaper paste, biobutanol and gun cotton. Sugarcane, rapeseed and soy are some of the plants with a highly fermentable sugar or oil content that are used as sources of biofuels, important alternatives to fossil fuels, such as biodiesel.
Question: Besides fire, what else is charcoal used for?

Output: one of the three ingredients of gunpowder

QUES: The Eastern Roman Empire today conventionally named the Byzantine Empire, a name not in use during its own time became increasingly influenced by Greek culture after the 7th century, when Emperor Heraclius (AD 575 - 641) decided to make Greek the empire's official language. Certainly from then on, but likely earlier, the Roman and Greek cultures were virtually fused into a single Greco-Roman world. Although the Latin West recognized the Eastern Empire's claim to the Roman legacy for several centuries, after Pope Leo III crowned Charlemagne, king of the Franks, as the "Roman Emperor" on 25 December 800, an act which eventually led to the formation of the Holy Roman Empire, the Latin West started to favour the Franks and began to refer to the Eastern Roman Empire largely as the Empire of the Greeks (Imperium Graecorum).

Who didn't rule Rome during this time period?
What is the answer?
ANS: unanswerable

QUES: George Sarton, the author of The History of Science, described Ibn Sina as "one of the greatest thinkers and medical scholars in history" and called him "the most famous scientist of Islam and one of the most famous of all races, places, and times." He was one of the Islamic world's leading writers in the field of medicine. Along with Rhazes, Abulcasis, Ibn al-Nafis, and al-Ibadi, Ibn Sina is considered an important compiler of early Muslim medicine. He is remembered in the Western history of medicine as a major historical figure who made important contributions to medicine and the European Renaissance. His medical texts were unusual in that where controversy existed between Galen and Aristotle's views on medical matters (such as anatomy), he preferred to side with Aristotle, where necessary updating Aristotle's position to take into account post-Aristotelian advances in anatomical knowledge. Aristotle's dominant intellectual influence among medieval European scholars meant that Avicenna's linking of Galen's medical writings with Aristotle's philosophical writings in the Canon of Medicine (along with its comprehensive and logical organisation of knowledge) significantly increased Avicenna's importance in medieval Europe in comparison to other Islamic writers on medicine. His influence following translation of the Canon was such that from the early fourteenth to the mid-sixteenth centuries he was ranked with Hippocrates and Galen as one of the acknowledged authorities, princeps medicorum ("prince of physicians").
Ibn Sina was described as the most famous scientist in what religion?

ANS: Islam

Roncalli was summoned to the final ballot of the conclave at 4:00 pm. He was elected pope at 4:30 pm with a total of 38 votes. After the long pontificate of Pope Pius XII, the cardinals chose a man who it was presumed because of his advanced age would be a short-term or "stop-gap" pope. They wished to choose a candidate who would do little during the new pontificate. Upon his election, Cardinal Eugene Tisserant asked him the ritual questions of whether he would accept and if so, what name he would take for himself. Roncalli gave the first of his many surprises when he chose "John" as his regnal name. Roncalli's exact words were "I will be called John". This was the first time in over 500 years that this name had been chosen; previous popes had avoided its use since the time of the Antipope John XXIII during the Western Schism several centuries before.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who was the last to choose the name John?
Ah, so.. Antipope John XXIII

Question: The Mexican Revolution involved a civil war with hundreds of thousands of deaths and large numbers fleeing combat zones. Tens of thousands fled to the U.S. President Wilson sent U.S. forces to occupy the Mexican city of Veracruz for six months in 1914. It was designed to show the U.S. was keenly interested in the civil war and would not tolerate attacks on Americans, especially the April 9, 1914, "Tampico Affair", which involved the arrest of American sailors by soldiers of the regime of Mexican President Victoriano Huerta. In early 1916 Pancho Villa a Mexican general ordered 500 soldiers on a murderous raid on the American city of Columbus New Mexico, with the goal of robbing banks to fund his army. The German Secret Service encouraged Pancho Villa in his attacks to involve the United States in an intervention in Mexico which would distract the United States from its growing involvement in the war and divert aid from Europe to support the intervention. Wilson called up the state militias (National Guard) and sent them and the U.S. Army under General John J. Pershing to punish Villa in the Pancho Villa Expedition. Villa fled, with the Americans in pursuit deep into Mexico, thereby arousing Mexican nationalism. By early 1917 President Venustiano Carranza had contained Villa and secured the border, so Wilson ordered Pershing to withdraw.
Try to answer this question if possible: What was the name of the Mexican general who attacked an African city in New Mexico?
Answer: unanswerable

Problem: The polarization of an antenna refers to the orientation of the electric field (E-plane) of the radio wave with respect to the Earth's surface and is determined by the physical structure of the antenna and by its orientation; note that this designation is totally distinct from the antenna's directionality. Thus, a simple straight wire antenna will have one polarization when mounted vertically, and a different polarization when mounted horizontally. As a transverse wave, the magnetic field of a radio wave is at right angles to that of the electric field, but by convention, talk of an antenna's "polarization" is understood to refer to the direction of the electric field.
When is a magnetic fields right angles to a electrical field?
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Answer:
transverse wave