Input: Planck constant
First recognized in 1900 by Max Planck, it was originally the proportionality constant between the minimal increment of energy, E, of a hypothetical electrically charged oscillator in a cavity that contained black body radiation, and the frequency, f, of its associated electromagnetic wave. In 1905 the value E, the minimal energy increment of a hypothetical oscillator, was theoretically associated by Einstein with a "quantum" or minimal element of the energy of the electromagnetic wave itself. The light quantum behaved in some respects as an electrically neutral particle, as opposed to an electromagnetic wave. It was eventually called the photon.

What type of charge did a particle have that behaved similarly to light quantum energy?
Output: neutral

Input: Mali
In 2007, about 48 percent of Malians were younger than 12 years old, 49 percent were 15–64 years old, and 3 percent were 65 and older. The median age was 15.9 years. The birth rate in 2014 is 45.53 births per 1,000, and the total fertility rate (in 2012) was 6.4 children per woman. The death rate in 2007 was 16.5 deaths per 1,000. Life expectancy at birth was 53.06 years total (51.43 for males and 54.73 for females). Mali has one of the world's highest rates of infant mortality, with 106 deaths per 1,000 live births in 2007.

In 2007 what was the death rate per 1000 people?
Output: 16.5

Input: Antarctica
European maps continued to show this hypothesized land until Captain James Cook's ships, HMS Resolution and Adventure, crossed the Antarctic Circle on 17 January 1773, in December 1773 and again in January 1774. Cook came within about 120 km (75 mi) of the Antarctic coast before retreating in the face of field ice in January 1773. The first confirmed sighting of Antarctica can be narrowed down to the crews of ships captained by three individuals. According to various organizations (the National Science Foundation, NASA, the University of California, San Diego, and other sources), ships captained by three men sighted Antarctica or its ice shelf in 1820: von Bellingshausen (a captain in the Imperial Russian Navy), Edward Bransfield (a captain in the Royal Navy), and Nathaniel Palmer (a sealer out of Stonington, Connecticut). The expedition led by von Bellingshausen and Lazarev on the ships Vostok and Mirny reached a point within 32 km (20 mi) from Queen Maud's Land and recorded the sight of an ice shelf at 69°21′28″S 2°14′50″W﻿ / ﻿69.35778°S 2.24722°W﻿ / -69.35778; -2.24722, which became known as the Fimbul ice shelf. This happened three days before Bransfield sighted land, and ten months before Palmer did so in November 1820. The first documented landing on Antarctica was by the American sealer John Davis, apparently at Hughes Bay, near Cape Charles, in West Antarctica on 7 February 1821, although some historians dispute this claim. The first recorded and confirmed landing was at Cape Adair in 1895.

When did Cook's ships cross the Antarctic circle?
Output: 17 January 1773

Input: Szlachta
In 1430 with the Privileges of Jedlnia, confirmed at Kraków in 1433 (Polish: "przywileje jedlneńsko-krakowskie"), based partially on his earlier Brześć Kujawski privilege (April 25, 1425), King Władysław II Jagiełło granted the nobility a guarantee against arbitrary arrest, similar to the English Magna Carta's Habeas corpus, known from its own Latin name as "neminem captivabimus (nisi jure victum)." Henceforth no member of the nobility could be imprisoned without a warrant from a court of justice: the king could neither punish nor imprison any noble at his whim. King Władysław's quid pro quo for this boon was the nobles' guarantee that his throne would be inherited by one of his sons (who would be bound to honour the privileges theretofore granted to the nobility). On May 2, 1447 the same king issued the Wilno Privilege which gave the Lithuanian boyars the same rights as those possessed by the Polish szlachta.

What was the nobles guarantee that his throne would be inherited by his sons? 
Output:
King Władysław's quid pro quo for this boon